So What CAN'T a President Do by Executive Action?

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So What CAN'T a President Do by Executive Action?         Taxes, divorce law and seizing property are no-nos. Read More WATCH VIDEO: What Powers Does a President Have? The Supreme Court rules the president overstepped his power by using recess appointments. Exercise Plus Fasting May Boost Brain's Neurons         Intermittent fasting and exercise may have some surprising brain benefits, research shows. Read More WATCH VIDEO: Exercise Can Kill You. Wait, What? Too much exercise can leave you flat on your back. For eternity. Worm Lives in Man's Head for Four Years         No wonder this man wasn't feeling well: the worm causes inflammation of the body's tissues in response to the parasite. Read More WATCH VIDEO: How Worms Can Fix Your Heart Scientists experiment with different stitch replacements and a promising adhesive comes from sandcastle worms. Tumbleweeds: Soon to Disappear?         The giant balls of thistle are more trouble than they're worth, according to the U.S. Department of Agriculture, which wants to eradicate them with a designer virus. Watch Follow Discovery News on Facebook! Get your sci-tech headlines all day on Twitter too! Follow us @Discovery_News. At Discovery we value your privacy. If you would like to be removed from Discovery News emails like this, please click here to our subscription center, where you can manage your account. We recently updated our privacy policy. This policy is effective as of 10/30/07. To see new policy click here . Discovery Communications, LLC One Discovery Place Silver Spring, MD 20910 © 2014 Discovery Communications, LLC