Nasa astronaut Chris Williams, left, Roscosmos cosmonaut Sergey Kud-Sverchkov, center, and Roscosmos cosmonaut Sergei Mikaev are seen inside the Soyuz MS-28 spacecraft after they landed in Kazakhstan (AP) A joint US-Russian crew safely returned to Earth on Sunday after spending more than eight months aboard the International Space Station (ISS), marking another milestone in continued…

Pearly razorfish begin life as females before some naturally transition into males.- National Geographic photo Fishing is known to reduce fish populations and change the size and age of fish found in the wild. But a new study suggests that the effects may go much beyond.Researchers have found that heavy fishing may be changing the…