A pile of ancient arrowheads from southern Africa still holds traces of toxic plant residue, even after some 60,000 years.

The discovery that small stone arrow tips were treated with plant poison 60,000 years ago means that ancient African hunters ...

A: Circumstantial evidence does not directly prove an element of the alleged misconduct, but provides information from which ...

In doing so, they found this orphan is within the same weight class as Saturn, strengthening the case that the galaxy teems ...

We don’t entirely know when life arose on Earth, but there’s increasing evidence that it happened pretty quickly after the planet itself got started. Now, scientists have found some of the earliest ...

Almost 14 billion years ago, the universe we inhabit burst into existence in an extraordinary event that initiated the Big Bang. In the first fleeting fraction of a second, the universe expanded ...

Get the latest federal technology news delivered to your inbox. Last month, the IRS released a study examining the feasibility of Direct File, an IRS-run electronic filing system for taxpayers. If ...

[I am happy to post this follow-up essay from Professor Rob Natelson]. My July 12 entry provided links to Founding-era sources showing that the Constitution's category of "direct taxes" included ...

The bizarre dimming patterns of Betelgeuse, an enormous red supergiant star in the constellation Orion, have bewildered ...