FROM Sean Solomon
Messenger Spacecraft Sends Back Pictures of Mercury For a week now, excited astronomers have been looking at close-up images of Mercury, where temperatures range from 800° to -300°. Is it possible that the planet closest to the Sun has deposits of frozen water? In 2004, we talked with Dr. Dean Soloman as the Mercury Messenger spacecraft took off for a long complex voyage to the planet nearest the Sun. He is the principle investigator for the Mercury Mission and Director of the Department of Terrestrial Magnetism at the Carnegie Institution for Science .
Trump's ethical conflicts pile up as transparency diminishes President Trump's refusal to reveal his income tax returns is just one example of a lack of transparency that could be hiding conflicts of interest. Other conflicts are already obvious from his appointments. And he's being sued for using his job to increase his profits.
Nuclear crisis on the Korean Peninsula slowly coming to a head North Korea did not conduct a nuclear test this weekend, but it did show apparent progress in developing a missile that that could strike the United States. The Trump Administration says it has lost its "strategic patience." We hear what that might -- or might not -- mean for North Korea, China and the prospects for diplomacy.
Does 'hire American' mean fire a foreigner? US companies are allowed to hire employees from other countries with highly developed skills that can't be found here. President Trump says it's being abused as a way to find cheap foreign labor. We hear about the benefits—and the risks—of changing the H-1B program.