The latest stories from the Science & Environment section of the BBC News web site.
An immune therapy derived from llama blood shows 'exciting potential' in early coronavirus trials.
The US supplier of CO2, which will receive millions in UK taxpayer support to reopen, will hike prices.
Cities like Sydney are already experiencing extremely hot days because of climate change.
All schools and colleges in Cornwall will be given litter pickers made from old hospital masks.
Insulate Britain protesters blocked traffic on both carriageways of the motorway in Surrey.
Are rich countries living up to their climate promises to the developing world?
The announcement is the country's latest climate pledge and a major step forward to address emissions.
Joe Biden called for cooperation in his first speech as US president to the UN General Assembly.
The government is to pay to reopen a plant that makes commercial carbon dioxide, to stop widespread disruption to food and drink production.
Mark Hankinson denies encouraging others to break the law during private webinars which were leaked online.
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