BBC

As representatives gather in Poland for talks on climate change, we look at how hot the world has got and what can we can all do to tackle global warming.

The UK's herbaria are great scientific collections that must be safeguarded for the future, say scientists.

A technique used to study earthquakes have been adapted to track elephants in the wild.

Scientists in Wales are looking at how slag heaps can be used to remove CO2 from the air in the fight against climate change.

Sam Gyimah says a row about the EU's Galileo sat-nav system shows any deal will be "EU first".

Illness, warmer waters and the fact that pilot whales travel in sociable groups could all play a role.

The mass stranding on Chatham Island means more than 200 whales have died off NZ in the past week.

Thousands skip school to urge action on climate change, despite criticism from Australia's PM.

A Honduran court finds seven men guilty of killing renowned environmental campaigner Berta Cáceres.

The United Nations biodiversity chief on why extinction is a "silent killer" and deserves more attention.

UK researchers develop an early warning system to prevent crops in Africa being devastated.

Misimi Isimi is an 11-year-old environmentalist on a mission to clean up Lagos.

The BBC's Vineet Khare visited the controversial Carmichael project by Indian energy giant Adani.

Is it remotely feasible to remove 12 billion tonnes of carbon dioxide from the air?

Twenty of the warmest years on record have been in the past 22 years, say the World Meteorological Organization.

UN chief Antonio Guterres warns the rise of nationalism is hurting efforts to tackle global warming.

Why one of Europe's last great beech forests is facing the chop.

The European Union says it wants to become the first major economy to achieve net zero emissions by 2050.

England's largest grey seal colony, in Norfolk, could see record numbers this pupping season.

Why gases produced by livestock, along with the carbon footprint of many of the foods we eat, are a major factor in global warming.