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British astronaut Tim Peake has said he is elated to be back on earth after six months onboard the international space station.

As one of our best-loved charities, the RNLI attracts enormous public support. But is it making life difficult for Britain’s independent lifeboat crews?

It’s a sunny day on the Isle of Wight. Mark Birch is building an extension for a local shop when his pager goes off. He scans the device briefly then turns and starts running. His colleagues are not surprised. They’re used to it. Within minutes he arrives at the local lifeboat station in Sandown on the southeast coast. Soon he and his two crew are at sea, powering towards Culver Cliff, where two swimmers, men in their 30s, are trapped against the rocks by a heavy swell.

It’s a tricky operation to steer the rigid inflatable boat close enough without it, too, being smashed against the rocks. Mark has to bring it in quickly then hover, balanced carefully at 90 degrees to the swell. The crew hoist one man out and Mark swings the boat round for the other before turning for home. With both men delivered safely to the emergency services, the boat is rehoused, washed and prepared for the next incident. Within two hours Mark is back at the building site.

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Single-use packaging is still normal practice, but every reusable receptacle saves about 100 disposable versions

I recently bought a set of top-of-the-range reusables. For coffee I got a KeepCup (keepcup.com), which fits neatly under any coffee machine, ensuring baristas don’t hate you during the morning rush. For water, famously available for free from a tap, I bought a Jerry Bottle (jerrybottle.com) and to add bubbles, a SodaStream (sodastream.co.uk) – each carbonator displaces 40 bottles.

For every reusable receptacle you bring into your life, you save about 100 disposable versions. Plus, I’ve made new friends. When I bring my KeepCup to the coffee stand people want to know where I got it. Single-use packaging is so normalised – the average UK household gets through 500 plastic bottles a year – that it turns out you have to re-make the case for reusables quite often.

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President Barack Obama draws attention to the dangers of climate change while on a visit to Yosemite National Park in California.

Swarming mayflies, a black-naped monarch and beached whales are among this week’s pick of images from the natural world

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In Cairns, north Queensland, coral bleaching isn’t the real worry – it’s the fear that tourists won’t come because they think the reef is already dead

Anyone in the Cairns tourism industry who might be feeling a sense of panic about the largest destruction of coral on the Great Barrier Reef since divers first strapped on snorkels is not letting it show.

The north-eastern Australian city – a global holiday destination where the natural wonder’s name festoons everything from the signs greeting airport arrivals to the local casino – is celebrating a storming tourist trade over the last 12 months.

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Footage shows the descent of UK astronaut Tim Peake and two other crew members as they touched down in Kazakhstan.

UK astronaut Tim Peake is safely back on Earth after a historic mission to the International Space Station.

Knightwood Inclosure, New Forest This clearance was done so long ago that many of the stumps dotting the area are punctured with holes made by wood-boring larvae

We crossed the ditch together into the clear-felled area of this inclosure. At once, she dropped at my feet and disappeared into the heather. She didn’t budge as I gently pulled the stems apart to find her, and no doubt would have been more active on a warmer and less overcast day.

The common heath moth Ematurga atomaria atomaria comes in a variety of colours. This female is the dark form; her wings, barely two centimetres in span, are crossed by ragged black lines set against a weave of tawny scales. No doubt her pheromones are already wafting on the breeze, inviting suitors to come and mate.

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British astronaut Tim Peake has boarded the spacecraft that will return him to Earth following an historic six-month mission to the space station.

MEGAFAUNA EXTINCTION: Sabre-toothed cats, one-tonne bears and sloths the size of elephants all happily coexisted with humans for up to 3000 years, but were extinct within 300 years after the climate of South America rapidly warmed.

On the shorelines of the Yellow Sea, eight million shorebirds are probing the sediment for food, but their bellies are empty. Could their epic migration end here on this barren mudflat?

Rhino poachers in Mozambique target anti-poaching guards.

Research has found that despite having excellent quality water, 40 per cent of Sydneysiders don't drink water straight from the tap.

Ocean experts call for international action to generate the kinds of maps of global seabeds that space missions have already returned for the Moon and Mars.

A horde of giant spider crabs has amassed in waters near Melbourne. Australian aquatic scientist Sheree Marris filmed this incredible footage.

From soaring temperatures in Alaska and India to Arctic sea ice melting and CO2 concentrations rising, this year is smashing records around the world

1) Arctic sea ice is melting at a rate that by September could see it beat the record low set in 2012. The maximum extent of sea ice in winter was at a record low, and the extent in May was the lowest for that month ever, by more than 500,000 sq km.

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Unprecedented temperature levels mean more heatwaves, flooding, wildfires and hurricanes as experts say global warming is here and affecting us now

May was the 13th month in a row to break temperature records according to figures published this week that are the latest in 2016’s string of incredible climate records which scientists have described as a bombshell and an emergency.

Related: Seven climate records set so far in 2016

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The week’s top environment news stories and green events. If you are not already receiving this roundup, sign up here to get the briefing delivered to your inbox

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Arctic sea-ice may have hit a record low in May but that does not mean September will set a new minimum mark, say polar experts at Reading University, UK.