Ocean Acidification Could Make Tiny Fish Lose Their Hearing

As expected, the otoliths in fish exposed to higher carbon dioxide levels were slightly larger—Radford wasn’t surprised. “More important,” he adds, “the symmetry between the left and right side were different.”Symmetry is vital for two-sided animals such as fish and...

How to Watch NASA’s Perseverance Mars Rover Landing

On Thursday afternoon, Perseverance, NASA’s most ambitious self-driving rover, will attempt the agency’s most challenging Mars landing. Perseverance is carrying a suite of science experiments that will search for signs of life, launch a drone helicopter, and record...