SEATTLE — Troubling new signs of how the coronavirus is spreading in the United States emerged Friday, as cases not explained by overseas travel or contact with a person known to be infected were ...

NASA’s long record of watching Earth’s neighborhood has revealed countless surprises, but the agency has not confirmed any brand‑new, unexplained phenomenon near our planet in the current reporting.

An NHS GP who frequently appears on ITV's Good Morning Britain and Lorraine suggests that five key warning signs generally ...