Feed aggregator

Fear of nuclear energy runs deep but it may be the most efficient and clean energy source we have, albeit with complications

Of all the hazards facing humankind, climate change is the single greatest threat we have ever faced. In a few short decades, we have altered the climate more than we ever thought possible and now, in the midst of the greatest heatwave recorded in decades in the hottest year on record, we are finally beginning to countenance the scale of problem before us.

The poorest of the poor have been the first to suffer – droughts and food shortages are already imperilling the lives of countless millions, with ensuing conflicts threatening even more. We have rendered some areas uninhabitable, and the number of climate refugees will only increase. Even we privileged folk in the western world are no longer immune, with the dangers steadily encroaching.

Continue reading...

In the global rush for bottled water, China leads the way. But while cities lack official recycling schemes, some residents are turning the tide of plastic waste into cash and keeping it out of landfil in the process

In the great global rush for bottled water, nowhere is thirstier than Asia. Demand is predicted to surge by more than 140% across the region this decade, to account for one-third of the global total by 2020.

China leads the way. The country accounted for 28% of the global demand for polyethylene terephthalate (Pet) bottles in 2015. Consumers bought 73.8bn bottles of water in 2016, up more than five billion on the previous year.

Continue reading...

Exclusive: Annual consumption of plastic bottles is set to top half a trillion by 2021, far outstripping recycling efforts and jeopardising oceans, coastlines and other environments

• Help us tell the stories that need to be told. Become a Guardian supporter or make a contribution today

A million plastic bottles are bought around the world every minute and the number will jump another 20% by 2021, creating an environmental crisis some campaigners predict will be as serious as climate change.

New figures obtained by the Guardian reveal the surge in usage of plastic bottles, more than half a trillion of which will be sold annually by the end of the decade.

Continue reading...

UK will not be bound by EU deal and opposition MPs say Tory government unlikely to have political will to develop equivalent system

The UK risks becoming the “dirty man of Europe” after Brexit with no plan to deal with the millions of plastic bottles dumped by consumers every week, according to politicians and leading environmental campaigners.

Related: A million bottles a minute: world's plastic binge 'as dangerous as climate change'

Continue reading...

After warm weather and summer rain, flying ants emerge from nests for a mass mating event to ensure survival and dispersal of the species

A steady stream of black ants scurries in and out of a crack in the patio. They have been living there quietly for weeks. Perhaps you tried to get rid of them – especially if they were taking sugar from the kitchen or crawling across your bedroom. Perhaps you ignored them, or marvelled at their ability to navigate over apparently featureless paving stones back to their nest.

Then we have a spell of warm weather, a summer downpour, and when it stops there are winged explorers erupting from the ground – welcome to flying ant day!

Continue reading...

‘Global covenant of mayors’ to work together on climate change whether current White House resident agrees or not

Mayors of more than 7,400 cities across the world have vowed that Donald Trump’s decision to withdraw from the Paris accord will spur greater local efforts to combat climate change.

At the first meeting of a “global covenant of mayors”, city leaders from across the US, Europe and elsewhere pledged to work together to keep to the commitments made by Barack Obama two years ago.

Continue reading...

And in the process, illustrated the difference between skepticism and denial

Whenever they hold one of their frequent hearings to reject and deny established climate science, congressional Republicans invariably trot out contrarian scientist John Christy, who disputes the accuracy of climate models. In doing so, Christy uses a cherry-picked, error riddled chart, but there’s a nugget of truth in his argument. Although the discrepancy isn’t nearly as large as Christy’s misleading chart suggests, atmospheric temperatures seem not to have warmed quite as fast since the turn of the century as climate model simulations anticipated they would.

Continue reading...

Around 30,000 honey bees swarm on a ledge at One Times Square, where the New Year’s Eve ball drop happens, in New York. Andrew Coté, a fourth generation beekeeper of AndrewsHoney.com, was called to the rescue and used a vacuum to suck up the bees, who he said were looking for a new home

Continue reading...

RN Drive brings you the latest in business

The discovery of a hundred-million-year-old specimen, beautifully preserved in amber, shows how the birds of yesteryear hatched fully prepared for takeoff

We’re back with News from the World of Old Feathers, and Lida Xing and colleagues strike again. They describe a new amber specimen of a Cretaceous bird with parts of the head, feet and wings beautifully preserved. Why is this important? After all, we have seen feathers in amber before, we have seen wings of juvenile birds in amber and last year we even had a piece of an actual dinosaur in amber. Haven’t we reached peak amber? I like to think we have not*.

What Xing and his team of paleontologists from China, Canada and the US describe in a new paper is a hatchling Enantiornithine bird that became trapped in sticky conifer resin about 99 million years ago, in what is now Burma. Although Enantiornithes looked superficially like modern birds – which is to say they were feathered and likely to have been good fliers – the anatomy of their shoulder girdle is different, they were toothed and the fingers in their wing had claws. The newly described specimen, nicknamed Belone, offers an unparalleled glimpse into feather development and molting in young Enantiornithes.

Continue reading...

New study finds smarter electricity network regulation would improve reliability, reduce emissions and cut power bills for energy users.

Wenlock Edge, Shropshire Birds verminous and ominous, persecuted and mythologised, foolproof, climateproof, futureproof

Two crows fly into a tree towards the end of a long dreamy summer’s day. They had been walking their beat on Windmill Hill, through the flowering cocksfoot, lady’s bedstraw, pyramidal orchids and whitlowgrass, hunting there as they have done every day for 15 years I know of. They now perch together as if watching the sunset, and so do I.

In the same place doing the same thing, what can I know of the corvid mind? We know corvid intelligence is equal to that of primates. We know early people were intimately connected to the crow tribes and there are funerary relics from more than 5,000 years ago containing the bones of crows and ravens buried in this land. This belongs to ancient rituals that suggest a mutual trade in death; these were birds of omen long before they were thought of as vermin.

Continue reading...

Why baseload should not be confused with "reliability" - and why building new coal fired generators - as proposed by conservatives in US and Australia - may make the grid less reliable, and more expensive.

Over the past decade we have seen a substantial increase in our scientific understanding of how climate change affects extreme rainfall events. Not only do our climate models suggest that heavy rainfall events will intensify as the atmosphere warms, but we have also seen these projections start to become reality, with observed increases in rainfall intensity in two-thirds of the places covered by our global database.

Given this, we might expect that the risk of floods should be increasing globally as well. When it comes to global flood damage, the economic losses increased from roughly US$7 billion per year in the 1980s to US$24 billion per year in 2001-11 (adjusted for inflation).

It would be natural to conclude that at least some of this should be attributable to climate change. However, we know that our global population is increasing rapidly and that more people now live in flood-prone areas, particularly in developing countries. Our assets are also becoming more valuable – one only needs to look at rising Australian house prices to see that the values of homes at risk of flooding would be much greater now than they used to be in decades past.

So how much of this change in flood risk is really attributable to the observed changes in extreme rainfall? This is where the story gets much more complicated, with our new research showing that this question is still a long way from being answered.

Are floods on the rise?

To understand whether flood risk is changing – even after accounting for changes in population or asset value – we looked at measurements of the highest water flows at a given location for each year of record.

This sort of data is easy to collect, and as such we have reasonably reliable records to study. There are more than 9,000 streamflow gauges around the world, some of which have been collecting data for more than a century. We can thus determine when and how often each location has experienced particularly high volumes of water flow (called “large streamflow events”), and work out whether its flood frequency has changed.

A streamflow gauging station in Scotland. Jim Barton/Wikimedia Commons, CC BY-SA

We found that many more locations have experienced a decrease in large streamflow events than have experienced an increase. These decreases are particularly evident in tropical, arid, and humid snowy climate regions, whereas locations with increasing trends were more prevalent in temperate regions.

To understand our findings, we must first look closely at the factors that could alter the frequency and magnitude of these large streamflow events. These factors are many and varied, and not all of them are related directly to climate. For example, land-use changes, regulated water releases (through dam operations), and the construction of channels or flood levées could all influence streamflow measurements.

We looked into this further by focusing on water catchments that do not have large upstream dams, and have not experienced large changes in forest cover that would alter water runoff patterns. Interestingly, this barely changed our results – we still found more locations with decreasing trends than increasing trends.

The Australian Bureau of Meteorology and similar agencies worldwide have also gone to great lengths to assemble “reference hydrological stations”, in catchments that have experienced relatively limited human change. Studies that used these sorts of stations in Australia, North America and Europe are all still consistent with our findings – namely that most stations show either limited changes or decreases in large streamflow events, depending on their location.

What can we say about future flood risk?

So what about the apparent contradiction between the observed increases in extreme rainfall and the observed decreases in large streamflow events? As noted above, our results don’t seem to be heavily influenced by changes in land use, so this is unlikely to be the primary explanation.

An alternative explanation is that, perhaps counterintuitively, extreme rainfall is not the only cause of floods. If one considers the 2010-11 floods in Queensland, these happened because of heavy rainfall in December and January, but an important part of the picture is that the catchments were already “primed” for flooding by a very wet spring.

Perhaps the way in which catchments are primed for floods is changing. This would make sense, because climate change also can cause higher potential moisture loss from soils and plants, and reductions in average annual rainfall in many parts of the world, such as has been projected for large parts of Australia.

This could mean that catchments in many parts of the world are getting drier on average, which might mean that extreme rainfall events, when they do arrive, are less likely to trigger floods. But testing this hypothesis is difficult, so the jury is still out on whether this can explain our findings.

Despite these uncertainties, we can be confident that the impacts of climate change on flooding will be much more nuanced than is commonly appreciated, with decreases in some places and increases in others.

Your own flood risk will probably be determined by your local geography. If you live in a low-lying catchment close to the ocean (and therefore affected by sea level rise), you’re probably at increased risk. If you’re in a small urban catchment that is sensitive to short sharp storms, there is emerging evidence that you may be at increased risk too. But for larger rural catchments, or places where floods are generally caused by snow melt, the outcome is far harder to predict and certain locations may see a decrease in flooding.

All of this means that a one-size-fits-all approach is unlikely to be suitable if we are to allocate our resources wisely in adjusting to future flood risk. We must also think about the effects of climate change in a broader context that includes changes to land-use planning, investment in flood protection infrastructure, flood insurance, early warning systems, and so on.

Only by taking a holistic view, informed by the best available science, can we truly minimise risk and maximise our resilience to future floods.

Seth Westra receives funding from the Australian Research Council, the Water Corporation of Western Australia and the Goyder Institute.

Hong Xuan Do does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond the academic appointment above.

Over the past two years The Conversation has published my analyses on a range of topics related to climate change and politics, including climate denial in the Liberal Party, 25-year-old cabinet papers (not once but twice), coal industry PR campaigns and much else besides. Finally comes a topic I can cheerfully say I know nothing about (at first hand, at least): raising children.

Apologies for oversharing, but I had a vasectomy in 2004. The columnist Andrew Bolt spotted this, via an article in Britain’s Daily Mail which clearly stated that I was the one who had been under the knife. Bolt claimed that my wife had “sterilised herself”. (She does a lot of yoga, but she’s not that flexible. We have pointed this out but Bolt has kept at it, repeating the claim almost six years later).

Despite what the Daily Mail article says (and what is within the quotes was never said), our decision not to have kids wasn’t based on concern for what our hypothetical children would do to the planet, but rather what the planet would do to them. My wife copped some online abuse, and I was once disinvited to appear on the BBC after explaining my actual position.

I first switched on to climate change in about 1989, and have become convinced that the second half of the 21st century will probably make the first half of the 20th look like a golden age of peace and love. There have been 30 years of promises and pledges, protocols and agreements, while atmospheric greenhouse gas levels have climbed remorselessly due to humanity’s emissions. I suspect that the reported recent flatlining in emissions growth could well turn out to be as illusory as the so-called global warming “hiatus”.

Writing recently in the Sydney Morning Herald, climate scientist Sophie Lewis eloquently asked:

Should we have children? And if we do, how do we raise them in a world of change and inequity? Can I reconcile my care and concern for the future with such an active and deliberate pursuit of a child? Put simply, I can’t.

While I would never presume to tell anyone what to do with their genitals, I must confess my personal amazement that climate activists who do have children - and who I know have read the same scientific research as me and drawn the same conclusions – aren’t freaking out more. (Perhaps they are just very tired.)

As the Manic Street Preachers sagely warned, our children will have to tolerate whatever we do, and more besides.

Be prepared?

So how do we prepare tomorrow’s adults for the world bequeathed to them by the adults of yesterday and today? Even the mainstream media is beginning to ask this question.

Some studies say young people don’t care enough about climate change; others claim they do. The Australian picture seems to be mixed.

As the environmental writer Michael McCarthy has lamented:

A new edition of the Oxford Junior Dictionary was published in 2007 with a substantial group of words relating to nature – more than 50 – excised: they included acorn, adder, ash, beech, bluebell, buttercup, catkin, conker, cowslip and dandelion. Their replacements included terms from the digital world such as analogue, blog, broadband, bullet-point, celebrity, chatroom, cut-and-paste, MP3 player and voicemail.

Might we be more adaptive than we think? The social demographers Wolfgang Lutz and Raya Muttarak, in their snappily titled paper Forecasting societies’ adaptive capacities through a demographic metabolism model, think so, describing how “the changing educational composition of future populations” might help societies adapt to climate change.

But not everyone thinks our brains will get us out of the mess that they and our opposable thumbs have got us into. As an editor at the Daily Climate pointed out:

A substantial portion of the human population lives on coasts. Much of their protein comes from fish. What happens when ocean acidification turns all of that to slime?

So what should we tell kids about climate?

It always helps to be open to advice from different settings. For instance, I stumbled on this good advice on a blog aimed at military spouses, but it strikes me that it holds just as true for the climate-concerned:

It is okay to show sadness around your kids; in fact, it is probably healthy. However, it is not okay to dump your emotions on them. Save rants and deep conversations for trusted adults.

If you are feeling overwhelmed (and you will), don’t turn to your kids. Children are usually helpless to offer advice and it can cause them to experience anxiety. Seek help from an adult friend … extended family, a neighbor, your church, or a counselor.

Sophie Lewis sensibly hopes that the next generation(s) “can be more empathetic, more creative and more responsive than we have been”. It’s a noble hope, but it will only happen if we behave differently.

So as previously in this column, it’s over to you, the readers. I have a couple of questions for you:

First, how do those of you who are parents (and grandparents, aunts and uncles) talk to your children about the climate change impacts that will happen in their lifetimes? Avoidance? Sugar-coating? The “straight dope”? Do you slip books from the burgeoning fields of dystopian fiction and “cli-fi” into their Christmas stockings? Besides The Hunger Games, there is Tomorrow, When the War Began, the excellent Carbon Diaries and, more recently, James Bradley’s The Silent Invasion. Do you worry about scaring the kids? What do the youngsters themselves say?

Second, what steps are you taking to help young people develop the (practical and interpersonal) skills required to survive as times get tougher? What are those skills? How do we make sure that it isn’t just the few (children of the rich and/or the “switched on”) who gain these skills?

ASX Announcement in relation to Genex’s Kidston renewable energy project in North Queensland.

Solar pioneer David Mills says if he can do it, almost anyone can. And by doing “it”, he means powering his house and his two electric vehicles largely through rooftop solar, and storing excess output in battery storage

The UK's favourite yellow submarine completes its first major science expedition in the Antarctic.

Vegetable grower Nectar Farms says its decision to use 100% renewable energy for the country’s biggest glasshouse project will deliver major cost savings over traditional use of gas and grid power. “Really, why would you do it any differently,” its CEO says.

US energy secretary says "baseload" coal is critical to functioning of the grid. Energy regulator says that is "absolutely not" the case.