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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.

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.

The four top congressional leaders held a closed-door meeting Thursday to assess where they stand on the coming government funding and debt-ceiling deadlines. As has become typical in recent years, some conservative House Republicans appear to be the stumbling block with their insistence that any deal repeal or defund Obamacare.

Wal-Mart says its plans to open six stores in the nation's capitol are back on after the mayor vetoed a so-called living wage bill that targeted big box retailers. The focus now turns to the District's 13 member City Council. The bill passed in July with eight votes — nine are needed to override a veto.

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.

Also: J.K. Rowling will write a screenplay set in the magical world; Tina Brown is coming out with a memoir.

Torrential rains around Boulder and nearby areas have led to at least four deaths and numerous washed-out roads. Forecasters warn that while the downpours should taper off Friday, even modest rains could cause more flooding.

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

Marc Goodman works to prevent future crimes and acts of terrorism, even those not yet invented.

Jonathan Trappe was trying to be the first to fly across the ocean using a "cluster balloon" rig. His little boat was suspended beneath about 300 helium-filled balloons. But after less than a day he was forced to land in Newfoundland. "Hmm, this doesn't look like France," he told his Facebook fans.