Natural gas is a clean-burning fuel that reaches homes through underground pipes. Unfortunately, older pipes often leak, wasting fuel and releasing unburned methane, a potent greenhouse gas. To find and measure leaks, Colorado scientists teamed up with the Environmental Defense Fund and Google Street View Cars to make “methane maps.” From Fort Collins, Colorado, Shelley Schlender reports.
What turns a cell into a brain cell, or a muscle cell, or a cancer cell for that matter? It is all about the DNA, and what genetic markers get turned on and off. Scientists at the Salk Institute have created a 3-D map of a cell that is giving them a unique view of how DNA works inside individual cells. Kevin Enochs reports.