Tim McDonnell

Tim McDonnell is a senior fellow on the Climate Desk, where he covers national energy policy.

California Might Close Its Last Nuclear Plant

Will it be able to do so without causing a spike in greenhouse gas emissions?

Is El Niño to Blame for the 'Explosive' Zika Virus Outbreak?

Scientists say a "perfect storm" of events has triggered the epidemic.

Confirmed: 2015 Was the Hottest Year on Record

Experts warn that global warming is tipping into “uncharted territory.”

Why It's OK to Be Hopeful About the Paris Climate Deal

Negotiators just took a big step forward in the fight against global warming.

The Fossil Fuel Industry Is Bankrolling the Paris Climate Talks

Some of the event's sponsors might be part of the problem, not the solution.

China Is Absolutely Destroying the U.S. on Clean Energy

Over the last year, the majority of global investment in clean energy projects was spent in developing countries.

Scientists Just Analyzed Dozens of Natural Disasters. Can You Guess Which Ones Humans Made Worse?

California's epic wildfire season has our fingerprints all over it.

California's Devastating Fire Season Is the New Normal

The state is a deadly "tinderbox."

California's Fire Season Is Shaping Up to Be a 'Disaster'

It's already looking bad, and it's going to get worse.

Scientists Are Arguing About When, Exactly, Humans Started to Rule the Planet

A new study argues it happened all the way back when we invented farming.

What Happens When an Eclipse Hits the World's Most Solar-Powered Country?

Germany is gearing up for an unusual challenge to its clean-energy revolution.

2014 Was the Biggest Year For Solar Power Ever

The overall price of solar—panels, installation, and financing—dropped 10 percent compared to 2013.

This Map Shows Why Midwest Agriculture Is Screwed

A look at which states' farmers could benefit from climate change—and which ones will lose big time.

29 Million People Are Bracing for a Massive, Historic Snowstorm

Record-breaking snow is expected across the Northeast.

World Leaders Cobbled Together a Last-Minute Climate Deal in Peru. What Happens Next?

Stay tuned over the next several months for commitments from key players like India, Russia, and Australia.

Last Month Was the Hottest October on Record

Which means 2014 is still on track to become the warmest year ever.

These Maps Show How Many Brutally Hot Days You're Likely to Suffer When You're Old

It could be over 95 degrees most of the year in Florida by the time Millennials retire. 

Will Sochi Have Enough Snow?

Piles of fake snow at the Olympics are just the latest sign of an industry on the brink.

Your State: Ready for Climate Change?

Find out with this handy new map.