
(CNN) – She was just in the highest grossing movie of all time – trying to preserve the planet Pandora. Now, actress Sigourney Weaver is trying to help save planet Earth.
She is in Washington for Earth Day and will be testifying at a Senate hearing on the environmental and economic impacts of ocean acidification. She joined us on Thursday's American Morning to discuss the important issue.
(CNN) – They were the e-mails read around the globe, leaked communications from a scientist. Skeptics called them proof of a conspiracy to mislead the public into believing in global warming.
Now, the first formal investigation into Climate-gate is over. To break down these developments we were joined on Friday's American Morning by Michael MacCracken, chief scientist for climate change programs at the Climate Institute, and Stephen Mcintyre, editor of climateaudit.org.
(CNN) – Today we have a follow-up to a story we brought you a while ago: the plight of the Burmese python in south Florida.
Efforts to control the population of the fast-breeding predators were underway this year until mother nature apparently decided to step in and do the job herself. Our John Zarrella has the report.
Editor’s note: Arctic explorer Eric Larsen is trying to make it to the North and South Poles and the summit of Mount Everest in 365 days as part of an effort to raise awareness about climate change. Larsen joined us on American Morning before he set out on his Save the Poles expedition – and just launched the second leg of his journey to the North Pole. Below is an excerpt from his online journal.
[cnn-photo-caption image= http://www.x-journal.com/journal/ericlars/images/img_5584.jpg caption="Larsen’s crew trekking towards the North Pole. Courtesy: Eric Larsen"]
By Eric Larsen, From EricLarsenExplore.com
Is the ice more beautiful because, for us here, it is dangerous and potentially deadly? Or is it beautiful because so few people have seen this place? Perhaps, its the fact that we are looking at something that may be gone in the future. Or does beauty lie just by existing?
We continue to be astounded by the forms and variety of ice here. Each day has seen a slight change in conditions. Today, we were pleased to find harder patches of snow as well as fewer pressure ridges; however, we are presently camped among some of the biggest pressure we've seen yet.
One surprise was finding a nearly kilometer wide lead in the early afternoon. While we regularly encounter leads, this was the first that was relatively new. Stepping gingerly, we watched as the ice bowed underneath our Atlas snowshoes and sent ripples forward. We decided to skirt the thinest sections. Read the full story »
Editor's Note: All this week in our special series "Broken Government," CNN is taking a hard look at our nation's government; the frustrating problems and the potential solutions. Today, our Dr. Sanjay Gupta heads to a small community, now surrounded by 14 chemical plants spewing cancer-causing waste. Why has it taken the government's environmental watchdog a decade to get involved?
(CNN) – All week long, we have been investigating our broken government. Today, we focus on the environment. Specifically, one town's fears that pollution from nearby chemical plants is making them sick.
Our chief medical correspondent Dr. Sanjay Gupta has the story of Mossville, Louisiana, and the government's failure to respond to their cries for help.
Read more: Toxic town 'like an experiment'
Editor’s note: Arctic explorer Eric Larsen is trying to make it to the North and South Poles and the summit of Mount Everest in 365 days as part of an effort to raise awareness about climate change. Larsen joined us on American Morning before he set out on his Save the Poles expedition – and completed the first leg of his journey when he reached the South Pole earlier this month. Below is an excerpt from his online journal.
[cnn-photo-caption image= http://www.x-journal.com/member/ericlars/images/b158_713847.jpg caption="Larsen’s crew trekking through Antarctica. Courtesy: Eric Larsen"]
By Eric Larsen, From EricLarsenExplore.com
One of the things that people always ask me is about the impact of air travel on the environment. I for one, travel a lot by air for sponsorship meetings and presentations. It is important to point out the paradoxes in one's own behavior (and then change them)…
There is no question that my expeditions (vacations and every day actions) have an effect on the amount of carbon that enters the atmosphere. However, I like everyone else, can do my part to reduce travel, save energy, buy carbon offsets and all the other little steps that can add up to make big change.

