Today's Top 5

Trump to Sign Executive Order Undoing Obama's Clean Power Plan

Donald Trump will on Tuesday sign an executive order to unravel Barack Obama’s plan to curb global warming, the head of the Environmental Protection Agency said on Sunday, claiming the move would be “pro-growth and pro-environment”. - The Guardian

Trump Megadonors Also Back Group That Casts Doubt On Climate Science

The Mercers’ attendance at the two-day Heartland conference offered a telling sign of the low-profile family’s priorities: With Trump in office, the influential financiers appear intent on putting muscle behind the fight to roll back environmental regulations, a central focus of the new administration. - Washington Post

Drought and War Heighten Threat of Not Just One Famine, But Four

For the first time since anyone can remember, there is a very real possibility of four famines — in Somalia, South Sudan, Nigeria and Yemen — breaking out at once, endangering more than 20 million lives. International aid officials say they are facing one of the biggest humanitarian disasters since World War II. And they are determined not to repeat the mistakes of the past. - The New York Times

'Human Fingerprint' Found on Global Extreme Weather

The fingerprint of human-caused climate change has been found on heatwaves, droughts and floods across the world, according to scientists. The discovery indicates that the impacts of global warming are already being felt by society and adds further urgency to the need to cut carbon emissions. A key factor is the fast-melting Arctic, which is now strongly linked to extreme weather across Europe, Asia and north America. - The Guardian

In California, Salt Taints Soil, Threatening Food Security

In much of California’s flat, sunny San Joaquin Valley, canals deliver the irrigation water that has made the state an agricultural powerhouse, supplying one-third of vegetables and two-thirds of fruit and nuts eaten in the United States. But along the west side of the valley, some fields are sprouting not crops, but solar panels. The water that made this agricultural land productive also spelled its doom. Because most water contains salt, irrigating adds salt to soil over time, especially in arid and semi-arid places with little rainfall and poor drainage. - Environmental Health News