Chemistry

Detailed testing of the chemical signature of the Neolithic monument’s most prominent large stones pinpointed where they came from

Soap bubbles are sticky enough to carry a pollen payload and delicate enough to land on flowers without harm.

Art museums are filled with centuries-old paintings with details of plants that today give us clues about evolution and breeding practices.

Originally published in August 1846

A silk-based substance could lead to new wearables

Originally published in January 1898

Here are some brief reports about science and technology from around the planet, including one about a 70-million-year-old mollusk fossil that reveals years back then had a few more days than we have now.

Author Merlin Sheldrake shows how this neglected kingdom is essential for life on earth

Biological oceanography expert Miriam Goldstein talks about issues facing the oceans. Reporter Adam Levy discusses air pollution info available because of the pandemic. And astrophysicist Andrew Fabian chats about black holes.

For the fourth Science on the Hill event, Future Climate: What We Know, What We Don’t, experts talked with Scientific American senior editor Mark Fischetti about what goes into modeling our climate—and how such models are used in addition to long-term climate prediction.

Originally published in November 1845

Prey animals flash biochemically produced light to confuse elephant seals hunting in the dark. But at least one seal turned the tables.