President Obama today announced new, aggressive proposals to increase fuel efficiency standards for cars and trucks. The World's Jason Margolis reports.

President Obama's announcement

A million cookie-cutter houses built in the 1940s in Canada may have a future as energy-independent homes. A Canadian prototype, complete with solar panels, generates more energy than it uses. If a million such homes were retrofitted, the energy savings could be substantial. The World's Jason Margolis brings us more on Canada's green housing experiment.

The World's Alex Gallafent reports on a new exhibition in New York that explores the relationship between product design and sustainability.

Today we were looking for the name of a Caribbean island where the local frogs are so threatened that scientists are airlifting some of them to safety. The answer is Montserrat. Anchor Lisa Mullins speaks with Andrew Cunningham of the Zoological Society of London.

European aircraft manufacturer, Airbus, is sponsoring a design contest aimed at reducing the aviation industry's impact on the environment without reducing the bottom line. It's called Fly Your Ideas...and teams from universities all over the world have signed on. The World's Alex Gallafent reports.

The Siamese crocodile is crucial to the survival of the wetlands in Southeast Asia, but it's close to becoming extinct. The World's Mary Kay Magistad visits a Cambodian wildlife rescue center to find out how conservationists there are trying to save the rare croc.

Lisa Mullins speaks with Shawn McCarthy of The Globe and Mail newspaper, about Canada's plans to phase out traditional coal-fired electricity plants.

Lisa Mullins speaks with the BBC's Phil Mercer about the Australian government's decision to delay a carbon emissions trading scheme because of industry concerns and the economic downturn.

Anchor Marco Werman speaks with Ellen Silbergeld, professor of environmental health sciences at Johns Hopkins School of Public Health, about what scientists know so far about the swine flu virus, or "Influenza AH1N1." Some think industrial-size pig farms in Mexico may have played a role in creating the virus.

Global swine flu outbreak

For today's Geo Quiz, we were looking for the name of the Antarctic ice shelf that's gotten a lot smaller recently. A chunk of ice about the size of New York City has broken away and shattering into a mass of icebergs. The answer is the Wilkins Ice Shelf. Anchor Lisa Mullins speaks with glaciologist Ted Scambos.