News of the day from across the nation, May 4

Nearly all of Detroit’s public schools were closed for a second consecutive day Tuesday after hundreds of teachers called in sick over concerns that many may not get paid if the financially struggling district runs out of money.

An antiabortion activist intended to intimidate a Wichita, Kan., physician when she sent a letter suggesting someone might place an explosive under the doctor’s car, a Justice Department lawyer told jurors in opening statements in her civil trial Tuesday.

Google spokesman Patrick Lenihan announced the two grants to reporters — $150,000 to help researchers from the University of Michigan predict which homes are likely to have water with high lead levels without physically testing it, and $100,000 to help researchers build a mobile app and online tools that can help Flint residents visualize data, report concerns and request testing kits.

Takata is set to recall at least 35 million air bags that can rupture, a person briefed on the matter said Tuesday, more than doubling the scope of what is already the largest safety recall in automotive history.

The National Highway Traffic Safety Administration could announce the expanded recall as early as Wednesday, said the person, who spoke on the condition of anonymity.

Georgia Gov. Nathan Deal said Tuesday that he has vetoed a bill allowing concealed handguns on college campuses, rejecting the proposal that was easily approved by a Legislature controlled by his own party in an election year.