Scientists observed a beetle walking upside-down on the undersurface of a pool of water. How does this beetle walk this way? And why? Video by John Gould.Credit... Supported by By Sabrina Imbler ...

After removal of the lens cortex, some surgeons like to polish the undersurface of the anterior capsular rim in order to remove as much of the microscopic lens debris as possible. These residual ...

The wrap was not secured to the undersurface of the diaphragm. Several months after the surgery, atrial fibrillation and congestive heart failure developed. The atrial fibrillation converted to ...

They observed it using the 10 meter Keck and 4 meter Anglo Australian ground-based telescopes, and detected very little if any sodium in the geysers. If the plumes originated from an undersurface ...

Saturn has dozens of moons, including Titan, which is as big as Mercury and has a thick atmosphere and lakes of methane; and Enceladus which has an undersurface ocean and eruptions of water geysers.