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Scott Kelly is home after a #YearInSpace. Let the weird science begin.

NASA astronaut Scott Kelly is back on Mother Earth after 340 consecutive days in space, more than any American in history. Welcome home, Scott! His mission centered on determining how long-term spaceflight affects the human body. Big picture, we want to figure out how to send a crewed mission to Mars. To do that, we have to figure out how to keep astronauts in space a helluva long time without gravity. NASA will perform tests to see how Kelly's body has changed. Those changes will be compared to his identical twin, retired astronaut Mark Kelly, who remained on the ground and is also undergoing tests. What’s Scott going to do now that he’s back on Earth? "I’m going to go home and jump in my pool,” he said. Gravity baby steps.

Leo has an Oscar and the ability to see into our blazin' hot future

Remember when Leonardo DiCaprio said in his Oscar acceptance speech Sunday that climate change was no joke? We just broke another worldwide temperature record. The Earth's temp soared to a record high in February, a whopping 1.5 degrees above average. That's a huge amount in climate science, where records are often broken by hundredths or tenths of degrees. Who's to blame? Us. As usual. Also, El Niño.

Could the eight-member Supreme Court split on major abortion case?

The Supreme Court heard 85 minutes of debate Wednesday on the biggest case affecting reproductive rights since 1992. Abortion clinics in Texas are challenging a state law that imposes tough restrictions on the facilities. Complicating the case is the recent death of conservative Justice Antonin Scalia, leaving the court without a ninth member. If Justice Anthony Kennedy, who likely holds the deciding vote, sides with the court's liberal wing to strike down any part of the law, the ruling could affect similar abortion restrictions in other states. Or Kennedy and the other justices could return the case to Texas for additional fact-finding. Another possible outcome: A 4-4 vote, likely decided by the end of June, would uphold a lower-court ruling that lets the Texas law stand and would apply only to Texas.

Ouch! Lindsey Vonn's ski season comes to crashing halt

It hurts just to watch. Superstar skier Lindsey Vonn ended her season after a crash in the super-G race in Andorra left her with three fractures. Adding insult to injury: Vonn is first in the overall World Cup standings. Vonn's first set of X-rays indicated a hairline fracture that would've allowed her to compete. Later, an MRI and CT scan showed she has three breaks in her tibial plateau. If the leg suffers further damage, it could hurt her future. "This is one of the toughest decisions of my career,” Vonn posted on Facebook.

For politics' oddest Odd Couple, Super Tuesday gives way to Weirdo Wednesday

Donald Trump's Tuesday was super; Chris Christie's anything but. It began as six New Jersey newspapers called for the governor to resign. ("We’re fed up with his opportunism.") It ended with the Twittersphere speculating on #ChristieThoughts, wild commentary on his blank stare during Trump’s awkward news conference Tuesday night. ("Chris Christie looks like he's in a hostage video.") On Wednesday, we chuckled less about "Chris" as "Mr. Trump" came out swinging, this time at a USA TODAY Network report on some black college students who said his campaign ejected them from his rally in Georgia. The press, Trump said, "are such liars. They are disgusting people, I’m telling you.”

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