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impressive, free version, as well as a pro version (per month fee)

The DeepDyve research engine uses proprietary search and indexing technology to cull rich, relevant content from thousands of journals, millions of documents, and billions of untapped Deep Web pages. Science oriented

DIORAMA is for science nerds, backyard explorers, animal enthusiasts and urban naturalists. It's a series of digital shorts from the wondrous halls of The American Museum of Natural History, taking inspiration from the Museum's classic dioramas and behind-the-scenes archive.

Formerly Bytesize Science

gateway to resources related to Free Software and Open Source Technology movement Chemistry & biology tools

The web site--WeChooseTheMoon.org--goes live at 8:02 a.m. on July 16, 90 minutes before the 40th anniversary of the Apollo 11 launch from Cape Canaveral, Fla. It will track the capsule's route from the Earth to the Moon, ending with the moon landing and Armstrong's walk--in real time, but 40 years later. Internet visitors can see animated recreations of key events from the four-day mission, including when Apollo 11 first orbits the moon and when the lunar module separates from the command module, as well as browse video clips and photos and hear the radio transmission between the astronauts and NASA flight controllers.

Truly excellent resources for education, suggested materials for on-line education in case of school closure due to pandemic

Links from a number of Govt. offices - excellent

gives you what it refers to as the very best resources for scientific research and for educational purposes. The sites that are added to this site are inspected and judged before they make it on to the Intute site so that you have less work to do. Aside from gathering a number of high quality resources for you to use all in one place, this type of screening process also cuts down on the spam interruptions that one often finds when surfing the web