Latest

The 115m-long US Navy destroyer is widely known for her bold action in the Battle off Samar, the Philippines.  The actions of the relatively lightly armed Johnston—sunk after a fierce battle with a large fleet of Japanese warships—helped stop the Japanese Admiral Kurita's Center Force from attacking vulnerable U.S.

Scientists used to think that only mammals and birds experienced different sleep states. More recent research, however, has revealed some reptiles and cuttlefish -- another cephalopod and relative of the octopus -- show non-REM and REM-like sleep.

A new study has found that the octopus has ‘quiet’ and ‘active sleep’, with different episode duration and periodicity, and experiences active sleep after a long episode of quiet sleep.

The exhibition is an excellent opportunity to connect with divers in Russia and Eastern Europe and widen the adaptive diving community, according to Jim Elliott, founder of Diveheart.

“We believe that everyone should have the opportunity to experience the life-changing power of scuba diving. There really are no boundaries to what we can achieve, and we have seen time and time again how educational scuba therapy has built confidence and transformed the lives of people with disabilities all over the world,” said Elliott.

Most scientists think they came from water-rich asteroids and comets raining down on the planet in its youth. Just after the Earth formed, it was very hot and dry. Prevailing theory suggests that millions of water-rich comets and asteroids bombarded our planet around 3.8 billion years ago, neatly explaining why oceans later appeared.

Also, the ratio of deuterium—or “heavy hydrogen” because it contains a neutron in addition to a proton—to hydrogen in our sea water matches the value found in water-rich asteroids, suggesting a common origin.