It was the third trigger of the recession indicator in less than two weeks.Bondsread more
U.S. manufacturer growth slowed to the lowest level in almost 10 years in August, the latest sign that the trade war may be exacerbating the economic slowdown.Marketsread more
Philadelphia Fed President Patrick Harker said he doesn't see the case for additional stimulus after the Federal Reserve's July rate cut.The Fedread more
Stocks fell, giving up earlier gains as investors wondered whether the Federal Reserve will cut interest rates next month.US Marketsread more
"My sense was we've added accommodation, and it wasn't required in my view," George tells CNBC's Steve Liesman.Investingread more
Former Prudent Bear Fund manager David Tice is urging investors to brace for a massive downturn.Trading Nationread more
German Chancellor Angela Merkel said a solution to the Irish "backstop" is possible before the October 31 Brexit deadline.Europe Economyread more
Apple plans to unveil three new iPhones in September, including two new "Pro" models and a successor to the iPhone XR, Bloomberg reported Thursday.Technologyread more
A ruling against J&J could mean more big payouts in similar cases across the country.Health and Scienceread more
While Volkswagen may not want to invest in Tesla, the U.S. carmaker has been scouting locations in Europe for a new Gigafactory there.Autosread more
Corporate profits posted modest growth in the second quarter as companies brace for slowing global growth.Retailread more
Plans to rocket humans to Earth's closest neighbor continue to advance, with the year 2024 a near-term goal — at least if Elon Musk has his way.
Yet space medicine expert Jim Logan said recently the effects on the human body from spending extensive time outside of Earth's gravity remain unresolved.
"We need a huge sample size and right now we have a sample size of one, and soon maybe two," Logan told CNBC at the New Worlds conference in Austin, Texas. Logan referenced astronauts Scott Kelly, who spent 340 days in space; and Peggy Whitson, who recently returned from the International Space Station after 290 days.
"We need to fly a lot of people, for long durations, if we're going to make any progress. You cannot talk about human colonization without that," Logan said.
Logan spent 20 years helping diagnose and treat NASA's astronauts. He said the main obstacle to sending humans to Mars is what he calls "the gravity prescription."
He said: "We know what Earth's gravity – one G for 24 hours a day – does. And we know that zero gravity, after four months, begins serious health deterioration."
Bone mineralization is one of those lack-of-gravity problems. For each month in space, Logan says the human body loses 1 percent of its bone mass. And, once back on Earth, the bones don't grow back.
"I'm not trying to throw cold water on the idea of going to Mars. I want to make sure we can survive if we do go," Logan said.
He says, if putting humans on Mars is truly a near-term goal, it means studies today must focus on Martian gravity, or 0.38 Gs.
"If we study the effect of 0.38 on the body around the clock, and it doesn't work, you can cross off Mars as a human settlement site until we do sort out the medical diagnosis," Logan said.
After medically serving 25 space shuttle missions, Logan stated current measures are stop-gaps that do little to actually counteract the effects of weightlessness on the body.
For "each deleterious effect," Logan says there's a new mechanical or pharmaceutical countermeasure that only "retards the deconditioning. They don't neutralize it and they don't reduce it," Logan said.
"We need to start sending more people into space if we're actually going to get somewhere, with even problems we know like the gravity prescription," he added.
The scientist also said that it is critical to use the words "outpost" and "settlement" distinctly when talking about space exploration.
"Let's stop playing fast and loose with this idea that the ISS [International Space Station] is our first settlement in space. We have a permanent presence, but with rotating crews," Logan added. "Settlement is men, women, children, over multiple generations."