University of Virginia School of Medicine researchers have discovered a key driver of chronic inflammation that accelerates aging, a finding that could lead to longer, healthier lives and the possible prevention of age-related conditions such as deadly heart disease and devastating brain disorders.

The harmful inflammation is driven by improper calcium signaling in the mitochondria of certain immune cells, researchers found. Mitochondria are the power generators in all cells, and they rely heavily on calcium signaling.

The UVA Health res...

Cities can be obstacle courses for communications signals. A radio signal must travel from a cell phone to a router to a cell tower, and onward to its recipient—all while bouncing between walls, buildings and other structures. When it hits an obstacle, the radio wave gets scattered, diminishing the signal. This in turn reduces the bandwidth. At the same time, the signal must compete with the bandwidth needs of numerous other devices in the area...

Microparticle dust aggregates, which are thought to play a role in the formation of new planets, are less likely to stick together after a collision when the aggregates are larger.

Current evidence suggests that microparticles of cosmic dust collide and stick together to form larger dust aggregates that may eventually combine and develop into planets...