Dozens of substances in the periodic table are in growing demand, including for green technologies and military uses ...

R avana and Meghnath are standing inside Lanka’s observatory, which is filled with giant crystalline lenses and massive metal tuning forks. Ravan taps a tuning fork, which hums with a deep vibrating ...

Key points Telescopes collect light that was emitted a long time ago and is only now reaching us on Earth. This means telescopes see the Universe as ...

Hatch will not appear on the show’s landmark Season 50 when it finally debuts on Wednesday, although he would have been happy to return. But the new season will surely be driven by a tension that has ...

Effective coverage measurement has emerged as a tool to help understand health system performance for the provision of ...