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This is especially true of hydrogen, which should be a

May 27, 2019 by Kimberly Parks

This is especially true of hydrogen, which should be a major concern for many people. The U.S. government's Clean Power Plan will require that all electric power plants be in the U.S., with the exception of some states that already have nuclear power plants. In some states, the plants will be operating according to a stricter, stricter-than-expected system and then they'll all be shut down by 2014. (The U.S. Energy Information Administration is planning to start testing the new system in 2020.) "A lot of people think that the U.S. could be a safe place for the hydrogen to go," says John Norell, a partner at the Berkeley Institute of Technology. "But there's a lot of misinformation out there that says that it could just go away."

The hydrogen theory may actually work. A hydrogen cell that has the right mix of chemicals and fuels is more efficient than any current power plant. But that seems to be an overstatement; the idea that you can make use of hydrogen simply by adding fuel to the battery simply doesn't ring true.

Another potential power source for flow batteries is natural gas, which can be produced by burning natural gas, often coal. But it's unclear whether that makes that process any less efficient than natural gas.As the first year of life on Mars gets started, NASA hopes to use the experience to set the stage for the next stage of mission design.

By the end of the year, scientists expect to have the first operational Mars rover on the red planet - which could help them develop a life raft for colonists after the end of the 20th century.

"We already have a lot of great ideas about how to do this. The most fundamental one is to design the robotic arm for life," said Bill Coughlan, NASA's senior scientist on human colonists.

But that could soon change.

The International Space Station is not ready for human colonists - but it's already making a lot of progress on Mars, said NASA chief scientist Andy Stern.

"We are now at the point where we have an opportunity to send someone to that world to get to a colony on the Red Planet where there will be no humans," he said.

Stern said he's had to design the instruments and have the instruments tested, to make sure they work.

"There is some risk that they have not been tested. There is some risk that we may not be able to put the instruments on the ground