"You couldn't put your finger in the water," said the lead author of the study, which spotlights the impacts of planetary ...

A heatwave made lakes in the Amazon hotter than the maximum temperature recommended for hot tubs — a death sentence for endangered dolphins, according to a new study.

Some of the lakes have exceeded 40°C (104°F), a temperature not suitable for the river dolphins and fish.

Researchers who looked into the deaths published their findings on Nov 6 in the journal Science. Read more at ...

A severe drought and heatwave turned Brazil's Lake Tefé into a deadly cauldron, with water reaching 41°C. Hundreds of ...

When dolphins began washing up dead by the dozens on Lake Tefe in Brazil’s Amazonas state, hydrologist Ayan Fleischmann was ...

The Amazon lakes have been warming rapidly — by 0.3 to 0.8C per decade over the past 30 years, a rate higher than the global ...