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Editor in chief Nancy Shute recounts the 50-year anniversary of the hominid's discovery, which upended the study of human evolution.

Readers wondered if mayo qualifies as a non-Newtonian fluid, and X user @Lightning456243 asked how a quantum computer can identify its own errors.

The behemoth coral, discovered in October in the Solomon Islands, is longer than a blue whale and older than the United States.

The discovery of potential cancer-causing agents in tap water led to the Safe Drinking Water Act -- a law that continues protecting public health.

Rocks returned by China's Chang'e-6 mission suggest volcanic activity just 2.8 billion years ago but lack telltale heat-generating elements.

The new finding comes from an analysis of pesticide use and prostate cancer incidence in over 3,100 U.S. counties.

Environmental DNA harvested from the ocean, land and air can help scientists monitor wildlife. The challenge is figuring out how to interpret this eDNA.

A contest to design a sound-only magic trick could help psychologists learn about differences between visual and auditory perception.

A protein found in Gila monster saliva flags tiny pancreatic tumors in PET scans.

Signs of temporarily delayed tooth development in the skull of an ancient Homo species youth spark debate about the origins of humanlike growth.