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In 1880, years before creating Sherlock Holmes, a young Arthur Conan Doyle went to the Arctic as the surgeon aboard a whaling ship. He recorded his adventures in journals full of notes and drawings, which have been published for the first time in a book called Dangerous Work.

Growing algae as a source of fuel could consume vast amounts of water and fertilizer, according to a study by the National Academy of Sciences. There's also a risk that the energy required to produce these fuels would make them impractical. These daunting technical problems need to be overcome if the nation wants to turn to algae fuels as a substitute for gasoline.

The former secretary of state and retired general, a Republican, also endorsed then-Sen. Barack Obama's presidential bid in 2008. "I think we ought to keep on the track that we are on," he said on CBS This Morning.

A big question for both campaigns is what percentage of young Americans they can convince to participate in the presidential election. Public media stations on the West Coast set out to try and determine how engaged under-30 Americans are in this year's race. Here's what they found.

The number of first-time claims remains stuck in a range between 350,000 and 400,000, though. Meanwhile, a surge in aircraft orders boosted demand for products designed to last three or more years.

A survey finds that the majority of advanced stage lung and colon cancer patients believe chemotherapy might cure them, when it can actually only buy them a few months. Oncologists are worried about how this impacts end-of-life decision making.

Insurgents continue to adapt and experiment with new tactics and approaches. The roadside bombs come in all shapes and sizes, and have grown more sophisticated and more lethal.

Chinese dissident and artist Ai Weiwei is pushing authorities' buttons again, this time with a spoof that was quickly blocked from Chinese websites. He's mocking government censorship.

Both candidates have been on their talking points about high gas prices. But Bloomberg Businessweek contributor Roben Farzad says there's only so much elected officials can do to control prices at the pump. He speaks with host Michel Martin as a part of NPR's "Solve This" series, looking at issues driving the election.

Following wine, whiskey, cheese and chocolate, rooibos has been professionally swirled, sniffed and sipped in the interest of justifying its place in the premium tier of gourmet food pricing.