Spacewalking Astronauts Give New Hand to Robot Arm

Spacewalking astronauts gave a hand to the International Space Station’s big robot arm Tuesday. As the federal government geared back up 250 miles below, NASA astronauts Mark Vande Hei and Scott Tingle successfully installed the new mechanical gripper. Because of the lingering effects of the government shutdown, the spacewalk got …

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Heat-not-burn Cigarette Alternative Faces US Scrutiny

A device that heats tobacco without burning it reduces some of the harmful chemicals in traditional cigarettes, but government scientists say it’s unclear if that translates into lower rates of disease for smokers who switch. U.S. regulators published a mixed review Monday of the closely watched cigarette alternative from Philip …

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WHO Chief Calls for Universal Health Care

The World Health Organization’s director general is calling on the agency’s 192 member states to adopt universal health care as the best way of guaranteeing health for all. This is the first time Tedros Adhanom Ghebreyesus has addressed the 34-member executive board since assuming his post in July as the …

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Crows ‘Hooked’ on Fast Food

Some New Caledonian crows craft hooked tools out of branched twigs, and Scottish biologists have discovered why – the birds can extract food from cracks and crevises several times faster than by using straight twigs. “It is a painstaking sequence of behaviors,” explains Professor James St. Clair, from the University …

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