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 E-Mail IMAGE: Erica Martinho, first author of the article. Manatees first split from their common ancestor after geological events isolated the South American region from the sea. The African species may have... view more  Credit: Erica Martinho All three species of manatee now present on Earth share a common ancestor from which they split some 6.5 million years ago, when a huge lake in Amazonia, then linked to the Caribbean, was cut off from the sea. The African manatee Trichechus senegalensis is not as genetically close to the West Indian manatee T. manatus as was thought, and ...

How climate change is worsening drought How climate change is worsening drought April 30, 2021 Spring is in full swing across the U.S. – flowers are blooming, pollen is blowing – and this means that the 2021 heat wave, hurricane, and wildfire seasons are just around the corner. After the 2020 Atlantic hurricane season produced a record number of named storms and record-breaking wildfires ravaged the Western U.S., vulnerable communities are bracing for more. However, another extreme weather event linked to climate change has been quietly afflicting the U.S. year-round with no signs of lett...

Fossil fuels stand accused of death, destruction, deception, denial, and dishonesty. They are dirty and disagreeable, but they became deities that we worshipped for decades. They divide our nation – for some of us (especially Albertans) they are angelic, others (especially climatologists) regard them as demons. Fossil fuels finance tremendous wealth for the few, a dependable provider of dividends. Just 100 fossil fuel producing companies and their investors have been the source of more than 70 percent of the world’s greenhouse gas emissions since 1988. Last year, Oxfam issued a reportco...

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California Refinery’s Switch to Biofuels Not as Green As it Sounds Processing liquid fuels from commodities based on a monoculture agriculture model that is devastating the world's last intact forests requires close review. A version of this op-ed appeared on the Biofuelwatch website. Gary Graham Hughes February 9, 2021 The Carquinez Strait is a wonder of powerful tidewaters that connects the San Francisco Bay with the Sacramento-San Joaquín Delta. Every salmon born in the extensive Sacramento and Central Valley watersheds will make the journey through this bottleneck of coast...