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The ultimate clean fuel, at least at first glance, is vegetable oil. Plants make it from sunlight, water, and a greenhouse gas — and they remove carbon dioxide from the air as they grow. The oil is easily converted into fuel for diesel engines. Around the globe there's now a rush toward so-called "biodiesel."

Sen. Edward M. Kennedy's Capitol Hill colleagues react to news of his malignant brain tumor with sadness, prayers and disbelief. Some are contemplating what Congress might look like without one of the Senate's most prolific legislators.

Democratic candidate Barack Obama announced Thursday he won't take part in the public-finance system for the presidential campaign. Obama becomes the first candidate in a general election to opt out of the primary system.

Superhero movies, thrillers and the return of some of our favorite TV shows — the 2025 summer season offers something for everyone.

The Fed held rates steady, but left the door open to cut them later this year if inflation continues to ease. Trump's tariffs, however, could complicate efforts to bring prices under control.

As the climate gets warmer, Copenhagen spends over a billion dollars to mitigate future flooding.

U.S. snowboarders psych themselves up before competition with heavy metal and pop music, cat photos, and apparently many on the men's halfpipe team now do Qigong.

For most people, the pandemic days of masking are behind them. In certain corners of the Winter Olympics, though, things still look a lot like they did in COVID times. Some athletes are taking extreme measures to stay healthy.

Chinese lawyers and writers are calling for the release of two journalists detained by authorities after they published an investigation into a senior Communist Party official.