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Planthoppers are champion jumpers — launching themselves upward, hundreds of times their own height, in just a couple of milliseconds. They achieve this feat with the help of cog-like teeth on their legs — the first mechanical gear system ever found in nature.

Jews across the world are sitting down to a big meal before Friday's Yom Kippur fast. And many of them are eating kreplach. Some say these strange-sounding-yet-good-tasting dumplings are a holiday meditation on our inner and outer selves. Or maybe they're just a delicious example of the peasant cooking of Eastern Europeans.

Thomas Weller would have died in a snow bank in 1966 had a stranger not helped him. Weller has been helping strangers in the same way ever since.

Dolby, who invented some of the technologies that revolutionized film and sound recording, was instrumental in developing surround sound technology. Dolby had been living with Alzheimer's and was diagnosed with leukemia this summer.

Twitter announced via Tweet Thursday that it's launching its long awaited initial public offering. It will be the most high profile IPO since Facebook went public last year. But Twitter hopes to avoid the mishaps that's marred Facebook's stock market debut.

Republican leaders recall how their party was blamed for the shutdowns of the mid-1990s and earnestly want to avoid a repeat, especially heading into an election year.

GPS expert Todd Humphreys says the future of geolocation will change the way we think of privacy.

Back in 1984, technology leader Nicholas Negroponte was able to predict, with surprising accuracy, e-readers, face to face teleconferencing and the touchscreen interface of the iPhone.

Twice in recent decades more accurate measurements have led experts to say North America's tallest peak is shorter than they thought. It's still No. 1 on the continent, though.

At a meeting in Geneva, companies failed to set up a compensation fund for victims of the April disaster — the worst in the industry's history. Only one company announced compensation, and of the 20 invited for the meeting, nine turned up. One critic said the meeting lacked "clarity around objectives."