Tim McDonnell

Tim McDonnell

Climate Desk Associate Producer

Tim McDonnell joined Climate Desk after stints at Mother Jones and Sierra magazine. He remains a cheerful guy despite covering climate change all the time. Originally from Tucson, Tim loves tortillas and epic walks.

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David Letterman's New Job: Fight Back Against Global-Warming Deniers

| Fri Sep. 18, 2015 10:11 AM EDT

Stephen Colbert is great, sure, but we were all sad to see David Letterman leave late-night TV this spring. Fortunately, he's not gone forever: The National Geographic Channel announced yesterday that Letterman will appear as a special correspondent on the second season of Years of Living Dangerously, the Emmy-winning documentary series about climate change. 

From the Los Angeles Times:

The upcoming season of the series will focus on "solutions that individuals, communities, companies and even governments can use to address worldwide climate change," said [National Geographic Channels CEO Courtney] Bach in a statement...

Other Hollywood names attached to Season 2 include Joshua Jackson ("The Affair"), Jack Black ("The Brink"), Ty Burrell ("Modern Family") and Cecily Strong ("Saturday Night Live").

The season will air next October, just before the presidential election.

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2015 Will Probably Be the Hottest Year on Record

| Thu Sep. 17, 2015 12:46 PM EDT

Another day, another smashed temperature record.

Earlier this week, a trio of independent analyses by scientists in the UK, Japan, and the US found that global temperatures over the summer were among the highest on record. Wednesday, US scientists announced that sea ice extent in the Arctic shrunk to its fourth-lowest minimum ever this summer. And Thursday, the National Oceanic and Atmospheric Administration joined the chorus with a report that found that last month was the hottest August ever recorded, and that 2015 is on pace to be the hottest year on record.

If this sounds familiar, that's because 2014 was very likely the hottest year on record until now. As my colleague Jeremy Schulman pointed out at the time, the specific ranking is way less important than the overall trend, which is that we're experiencing more record-breaking hot temperatures than ever before. Today's news is just more proof of that.

Here's the data for August. There is a lot of dark red (meaning the hottest on record) on this map:


The picture looks equally extreme for the year-to-date:


Here's how those year-to-date temperatures stack up against some other extremely hot years. You can see that 2015 is on pace to blow past 2014:

NOAA also reported that the insane drought in California and the Northwest won't be lifting anytime soon:


Here's What the Drivers of the GOP Clown Car Are Saying About Climate Change

| Wed Sep. 16, 2015 4:06 PM EDT

The second Republican primary debate is tonight. It should be fun. It's supposed to focus on foreign policy, so it could be an excellent opportunity to examine the global implications of climate change. What's more, three of the show's biggest stars have been running their mouths about global warming over the last few days.

Guess what? The things they said were dumb and wrong.

First up: The Donald. During a speech in Texas on Monday, Trump took aim at President Barack Obama's oft-repeated (and true) claim that climate change is a major threat to America's national security.

"They changed it to climate change because the word 'global warming' wasn't working," Trump said. "Then they changed it to extreme weather—you can't get hurt with extreme weather."

Next up, rising star Ben Carson, who has gained more in the polls over the last month than any other candidate and poses the biggest challenge to Trump tonight. Last week, he told the San Francisco Chronicle that "there is no overwhelming science that the things that are going on are man-caused and not naturally caused. Gimme a break."

Actually, there is a ridiculously overwhelming amount of science that shows just that. And fortunately, California Gov. Jerry Brown (D) was happy to share all that information with Carson:

Finally, there's Carly Fiorina, the only candidate to be promoted from the "kid's table" debate in August, to the grown-up table tonight, thanks to some good polling early in the month. In an interview with CNBC's John Harwood published today, she trotted out the good old standby line that "a single nation acting alone can make no difference at all," and that therefore the United States needs to stop "destroying peoples' livelihoods on the alter of ideology."

I guess she missed the news that the United States, rather than acting alone, has actually been really successful in convincing China and other major polluters to take action.

This Video Shows What It's Like to Drive Through California's Raging Valley Fire

| Mon Sep. 14, 2015 10:21 AM EDT

Hellish new video has emerged from the heart of California's Valley Fire, which turned vicious over the weekend, destroying an estimated 400 homes and 20 businesses in Lake County, northeast of wine country and Santa Rosa.

While not the biggest in size, the Valley Fire has become one of the most destructive in a fire season exacerbated by California's prolonged drought. According to the LA Times, four firefighters were injured and one civilian may have been killed. As of Monday morning, the fire, currently burning 50,000 acres, is only 5 percent contained, and more than 1,400 firefighters are on the ground.

Yesterday, Gov. Jerry Brown declared a state of emergency in Lake and Napa counties, allowing the California National Guard and other state resources to mobilize against the fire.

Walls of flames crept up on one resident of the Anderson Springs community, who fled along a road swept by fire and posted a harrowing video of his escape. In a comment on the video, YouTube user mulletFive wrote, "We got no phone call, there were no sirens, no ash falling, no smoke, no air support. As far as we knew the fire was still far away. But it turns out it was very close to our home, there was simply not enough firefighters to tend to our area." He made it safely south to the Bay Area, according to comments on the video.

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