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It's been a busy week in London, where climate change protests ramped up again - with masks and social distancing - after a long pandemic hiatus.

Numbers on the streets are lower than before coronavirus hit - but Extinction Rebellion activists say they're being as careful as possible and can't afford to wait any longer.

"COVID is likely to go on another couple of years and we don't have that much time," said Angie Nicholas, a child psychiatrist and one of about a thousand protesters gathered in Parliament Square. "We're super-aware of COVID - but climate and ecological threats are an emergency too."

That's evident in the Amazon, where the coronavirus pandemic has been particularly deadly, forest losses have surged and the fire season is now underway, threatening to overwhelm health systems with smoke inhalation cases.

"We have a very fragile health system in the Amazon, that has had a hard time facing the pandemic. So the coincidence of fires and the pandemic is very, very bad," Miguel Lago, of Brazil's Institute for Health Policy Studies, told correspondent Fabio Zuker.

In Portugal, a group of young people hit by surging wildfires and heatwaves are fighting back against the growing risks. They today filed a lawsuit against 33 countries with the European Court of Human Rights, saying government inaction on climate change jeopardises their future.

"It's terrifying to have a fire close to your home," noted Catarina Mota, 20, one of the six plaintiffs. "I live with the feeling that every year my home becomes a more hostile place."

In Cambodia, meanwhile, rice farmers who once cut down protected forests to supplement their income, after getting a pittance for their crops from middlemen, have partnered with a company that pays them a fairer price in exchange for patrolling the forests to discourage poachers and loggers.

"It can be very complicated but in some ways it's the only answer," said Nicholas Spender, the chief of Ibis Rice, a social enterprise now set to turn a profit this year as more buyers opt for environmentally friendly products.

Water-related conflicts set to rise amid demand growth and climate impacts
About a quarter of the world's population faces severe water shortages exacerbated by climate change - and with that is coming conflict, social unrest and migration

Hot but want to stop the virus? Japan keeps mask-wearing cool in summer
Soaring summer temperatures can make wearing a coronavirus-blocking mask a challenge - but Japan is innovating to keep wearers cool

Mapping environmental crime seen as key to slowing Amazon forest losses
To disrupt illegal mining, logging and other crime, showing the connections between them is vital, researchers say

U.N. chief warns India over 'bad economics' of coal
Continuing coal investment is creating a "human disaster," U.N. Secretary-General Antonio Guterres tells India's leaders

Global reforestation drive grows fast as governments grasp benefits
Nations, state authorities and green groups have pledged to reforest areas equivalent to about six times the size of Germany

'Cadillac insurance'? Hunt for private firefighters as California burns
With public firefighting resources now stretched to the limit, wealthy Californians are buying themselves an added layer of protection

Staff say sexism, racism and abuse are 'systemic' in U.N.-led climate fund
Current and former Green Climate Fund workers said they suffered or witnessed instances of inappropriate relationships and abuse of power

As virus curbs ease, Extinction Rebellion climate activists head back to streets
After a hiatus, the climate activism movement aims to resume large-scale - but socially distanced - protests

'Build back better': U.S. tree-planting push to curb warming, boost jobs
Cities, corporations pledge to plant, restore 855 million trees this decade