Today, Lisa Jackson says goodbye to the U.S. Environmental Protection Agency, the federal agency she ran for four years. We’d like to thank former Administrator Jackson for her service. But oh heck, we’re not shy: Consider this a bit of a Valentine’s Day card to Ms. Jackson and the entire EPA.

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It’s cooling down in many parts of the U.S., but the worst drought in decades is still going on. Just when you think the news about the drought can’t get any worse, here’s something else to worry about. A lot of things you buy are about to get more expensive.

MORE LIKE THIS: Dirty Weather // Feature

The weather in Louisiana isn’t cooperating with residents trying to deal with storm damage from Hurricane Isaac. It’s so hot and sticky that Louisiana’s Secretary of Health and Hospitals issued a stark warning about the heat: “This is a serious condition that can kill you.”

MORE LIKE THIS: Dirty Weather // Feature // ImTooHot

As the residents of New Orleans can tell you, it only takes one intense hurricane to cause years of grief. The best evidence suggests hurricanes will get more dangerous as the world warms and sea levels rise. And the more global warming pollution we put into the atmosphere, the worse things will get.

MORE LIKE THIS: Dirty Weather // Extreme Weather // Feature // Sea Level Rise

Dr. Muller, a former climate skeptic, recently made headlines when he said the evidence is in and “global warming is real.” This is an important turn of events, but unfortunately Dr. Muller is still repeating a number of widely debunked myths about climate change. Here are just three that came up during a recent radio show.

MORE LIKE THIS: Climate Denial // Feature

James Hansen’s study finds that extreme heat occurs over 10 times more often now than in the 1950s, 60s and 70s. This isn’t based on a computer model — it’s actual observations of global temperatures.

MORE LIKE THIS: Dirty Weather // Extreme Weather // Feature // ImTooHot

You’ve seen the pictures in the news: Withered crops. Despondent farmers. And all around the country, people are feeling the impacts of the worst drought in decades in their neighborhoods and backyards.

MORE LIKE THIS: Dirty Weather // Extreme Weather // Feature // ImTooHot

Last week, I was fortunate enough to take a little vacation. If I wanted a break from climate change, however, I probably shouldn’t have gone to Colorado.

MORE LIKE THIS: Dirty Weather // Extreme Weather // Feature

Is climate change affecting your local food supply – either food you buy or harvest yourself? Tell us your story below.

MORE LIKE THIS: Feature // Food Security // Sea Ice

As a scientist, I know how important it is for our kids to get a top-notch science education. So it’s extremely significant that a new set of national science standards – the first to be released in over a decade – explicitly ask our schools to address climate change.

MORE LIKE THIS: Climate Denial // Education // Feature