On Wednesday, according to an online petition, almost 6,000 scientists shut down their labs, teaching and other activities to protest racism.
No matter who wins the election, the president will be at least 73 years old. Should voters be able to see their medical records?
More than 850 participants raised nearly $12,000 at this year’s event.
Brad Pazoureck will climb the tallest building in the U.S. on May 17.