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Animals

Whys Guy

Interested in seeing an exploding watermelon, using liquid nitrogen to make ice cream, or knowing why a hurricane spins? Physicist Mats Selen of the University of Illinois has appeared regularly on a local morning TV program to demonstrate a wide variety of physical and chemical phenomena. View video clips of these entertaining presentations. Requires Windows […]

Materials Science

Charging gold with a single electron

Dropping a single electron onto a gold atom with a scanning tunneling microscope converts gold from its neutral state to an ionic state.

Tech

Quantum dots light up cancer cells in mice

Brightly fluorescent crystals known as quantum dots have the potential to seek out cancerous cells in the body, a trick that could lead to highly precise cancer screening.