What Birds See
Evolution has endowed birds with a system of color vision that surpasses that of all mammals, including humans
The Quest for the Superlens
Built from "metamaterials" with bizarre, controversial optical properties, a superlens could produce images that include details finer than the wavelength of light that is used
Stem Cells: The Real Culprits in Cancer?
A dark side of stem cells--their potential to turn malignant--is at the root of a handful of cancers and may be the cause of many more. Eliminating the disease could depend on tracking down and destroying these elusive killer cells
As they wait for the space telescope to be serviced one last time, astronomers reflect on its discoveries over the past 16 years
CSI: The Reality
Attorneys, investigators and educators have felt the impact of television's popular forensics programs
A Power Grid for the Hydrogen Economy
Cryogenic, superconducting conduits could be connected into a "SuperGrid" that would simultaneously deliver electrical power and hydrogen fuel
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