Sky high: Carbon dioxide levels in air spike past milestone

The amount of heat-trapping carbon dioxide in the atmosphere has shot past a key milestone — more than 50% higher than pre-industrial times — and is at levels not seen since millions of years ago when Earth was a hothouse ocean-inundated planet, federal scientists announced Friday.

Average US vehicle is now a record 12.2 years old

The average age of light vehicles in operation has hit a record, increasing by two months this year to 12.2 years, as a shortage of vehicles is keeping Americans in their cars for longer, according to a study released on May 23.

Envoy says US, allies preparing for N. Korean nuclear test

SEOUL, South Korea — President Joe Biden’s special envoy for North Korea said Friday the United States is “preparing for all contingencies” in close coordination with its South Korean and Japanese allies as it monitors North Korean arrangements for a possible nuclear test explosion that outside officials say could be imminent.

Senator: Chief had no radio during Uvalde school shooting

UVALDE, Texas — The state agency investigating the mass shooting at an elementary school in Uvalde has determined that the commander facing criticism for the slow police response was not carrying a radio as the massacre unfolded, a Texas state senator said Friday.

Russia may be in Ukraine to stay after 100 days of war

When Vladimir Putin sent troops into Ukraine in late February, the Russian president vowed his forces would not occupy the country. But as the invasion reached its 100th day Friday, Moscow seemed increasingly unwilling to relinquish the territory it has taken in the war.

Firm proposes Taser-armed drones to stop school shootings

Taser developer Axon said this week it is working to build drones armed with the electric stunning weapons that could fly in schools and “help prevent the next Uvalde, Sandy Hook, or Columbine.” But its own technology advisers quickly panned the idea as a dangerous fantasy.

Nadal to French Open final after Zverev injury

PARIS — Rafael Nadal was locked in a tight, compelling and lengthy French Open semifinal Friday when his opponent, third-seeded Alexander Zverev, ran to to chase a shot and twisted his right ankle. Zverev crumpled to the ground, wailing in agony and clutching at his lower leg.

Rangers beat Lightning 3-2 in Game 2 for 2-0 series lead

NEW YORK — After winning the series opener with an offensive display, the New York Rangers used a strong defensive effort to take Game 2. Now they are two victories away from reaching the Stanley Cup Final for the first time in eight years.