Science Magazine: As rising levels of atmospheric greenhouse gases continue to threaten drastic climate change, some scientists are scouring for ways to scrub the key offender, carbon dioxide (CO2), right out of the air. Now, a team of chemists led by Stuart Licht at George Washington University in Washington, D.C., thinks it has discovered a method that could possibly pay for itself by making something potentially useful out of the CO2 pulled from the air. Today in Nano Letters, the group presents a process that...