Despite advances in laser technology, one dream remains elusive: a table-top instrument that can pump out a beam of high-intensity, coherent x-rays. Such a device would give researchers Superman-like eyes to peer into living cells or catch glimpses of molecules during a chemical reaction.
Fruit flies, like people, follow a daily schedule of eating, resting, and other activities. Now neurogeneticists have discovered two genes that appear to be long-sought missing pieces in the biological clocks that regulate these activities.
Today is the 291th anniversary of the birth of Carolus Linnaeus, the Swedish botanical taxonomist who was the first person to formulate and adhere to a uniform system for defining and naming the world's plants and animals.
Quakes constantly rock the sun, triggered as convecting gas patches rise and shake the solar surface. Now astronomers report in tomorrow's issue of Nature that huge flares of x-rays can also trigger solar quakes.