Systemic weed-killer, like those made with glyphosate, should be applied directly to the weed you want to get rid of. Do not apply these products to your entire lawn. Glyphosate products kill all vegetation and should only be applied directly to the leaves of the dandelion.
That's one giant leap! Alan Eustace, a senior vice president at Google, set a new world record today by completing the highest-altitude skydive yet--parachuting from 135,908 feet (or 25 miles) above Earth. The record was previously held by daredevil skydiver Felix Baumgartner, who leaped from 24 miles above Earth in October 2012.
NASA has worked on some inspiring interplanetary projects in the last few years, but few have been as ambitious as the simply-named Space Launch System, a new rocket that will be the largest ever built at 384 feet tall, surpassing even the mighty Saturn V (363 feet), the rocket that took humanity to the moon.