DARPA's hypersonic HAWC completes final flight test at over Mach 5

Most archaeologists now agree the Orion Correlation Theory — the idea that the pyramids specifically aligned with the three stars of Orion's Belt some 10,000 years ago — is a fringe idea.

New cosmic map reveals the universe's matter isn't as 'clumpy' as it should be

An action plan to prevent Alzheimer's disease