You are currently previewing the NEW Scientific American site. Tell us what you think or view the old site

Skip to main content

Chemistry2492 articles archived since 1845

Urban Food Foraging Looks Fruitful

Fruits growing wild in urban areas were found to be healthful and to contain lower levels of lead than what's considered safe in drinking water  

November 18, 2015 — Cynthia Graber

How to Do Quantum Magnetic Levitation at Home

Air jets and sound waves can be used to levitate objects. But the strangest way of all taps the quantum effects of superconductors. Game developer, space traveler and friend of Scientific American Richard Garriott glides through the demonstration.

November 17, 2015 — Benjamin Meyers and Lee Billings

Why Do Onions Make Us Cry?

Anyone that's chopped into an onion is familiar with the noxious fumes and irritating pain induced by an otherwise delicious vegetable. Scientific American editor Ferris Jabr explains how this bulbous member of the Allium genus can bring us to tears.

Video credits: edited by Kathryn Free, produced by Eric R. Olson

November 5, 2015

Methane Plumes Bubbling along U.S. Northwest Coast

Researchers report a spike in the number of methane plumes along the Northwest coast emanating from depths of about 500 meters, a possible indication that submerged frozen methane is becoming available 

November 2, 2015 — Julia Rosen

Starting Thanksgiving

Enter code: HOLIDAY 2015
at checkout