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Physics

The Hunt for Antihelium

Scientists have been searching about 30 years for a single nucleus of helium made from antimatter, and although the discovery would imply that whole antimatter galaxies exist, the researchers' time could be running out.

Humans

Letters from the May 12, 2007, issue of Science News

Saw right through it E. Fred Schubert and his colleagues are to be congratulated for developing an improved antireflective coating (“The New Black: A nanoscale coating reflects almost no light,” SN: 3/3/07, p. 132). But the coating would not make a lens “absorb” more light. Rather, it would help the lens “propagate” the light. Nathaniel […]

Math

The Mathematical Lives of Plants

Scientists are figuring out why plants grow in spiral patterns that incorporate the 'golden angle'.