
Sharks may be unable to distinguish between colours, according to a lab study published on Tuesday that could benefit swimmers, surfers and sharks themselves.


| Scientists have found evidence of a "drastic" shift since the 1970s in north Atlantic Ocean currents that usually influence weather in the northern hemisphere, Swiss researchers said on Tuesday. |

![]() WASHINGTON: Immigrant workers have gained more than half a million jobs in the United States since the end of the Great Recession last year, while US-born workers continued to lose jobs in the same period, a study shows. |