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Scientists hid secret codes in light to combat video fakes

“Video used to be treated as a source of truth, but that’s no longer an assumption we can make.” It’s easier than ever to manipulate video footage to deceive the viewer and increasingly difficult for fact checkers to detect such manipulations. Cornell University scientists developed a new weapon in…

How old is the earliest trace of life on Earth?

A recent conference sees doubts raised about the age of the oldest signs of life. The question of when life began on Earth is as old as human culture. “It’s one of these fundamental human questions: When did life appear on Earth?” said Professor Martin Whitehouse of the Swedish…

New adhesive surface modeled on a remora works underwater

It was tested for its ability to adhere to the inside of the digestive tract. Most adhesives can’t stick to wet surfaces because water and other fluids disrupt the adhesive’s bonding mechanisms. This problem, though, has been beautifully solved by evolution in remora suckerfish, which use an adhesive disk…