"The search for extraterrestrial intelligence (SETI) has been going on for over half a century. It has mostly drawn a blank. But once in a while there is a flurry of excitement. Here are some of the highlights."
Chem Collective is a project designed and maintained by Carnegie Mellon University's chemistry department and the National Science Digital Library. On Chem Collective you will find virtual labs for chemistry experiments, simulations, visualizations, tutorials, and auto-graded problems. Students and teachers can search the site by resource type or by chemistry topic.
100,000 of the best questions from NY Regents, State Assessments, Academic Competitions, and more.
Search by topic or exam. Select, arrange, and format questions the way you like. Create beautiful classroom materials in just minutes!
The Australian warship HMAS Sydney is anchored in Sydney Harbor in this undated photograph. The ship sank in November 1941 after a battle with a German vessel. Despite extensive search efforts, the boats were not found until 2008.
"In November 1941, two ships crossed paths off the coast of Australia. One was the German raider HSK Kormoran. The other: an Australian warship called the HMAS Sydney. Guns were fired, the ships were damaged, and both sank to the bottom of the ocean."