News

Computing

Going to digital extremes

A researcher designs the ultimate laptop, stretching the laws of physics to their limits to achieve blazing computation rates.

Earth

Bt corn pollen can hurt monarchs

A second test of a strain of corn genetically engineered to make its own insecticide finds potential for harm to monarch butterfly caterpillars.

Ecosystems

Virtual skylarks suffer weed shortfall

A new mathematical model raises the concern that switching to transgenic herbicide-tolerant crops could deprive birds of weed seeds.

Archaeology

Maya palace suddenly expands

Archaeologists find a sprawling palace and other surprises at a 1,300-year-old Maya site in Guatemala.