Plus: This company is developing gene therapies for muscle growth, erectile dysfunction, and "radical longevity" For decades, lithium-ion batteries have powered our phones, laptops, and electric vehicles. But lithium's limited supply and volatile price have led the industry to seek more resilient alternatives. They work much like lithium-ion ones: they store and release energy by shuttling ions between two electrodes. But unlike lithium, a somewhat rare element that is currently mined in only a handful of countries, sodium is cheap and found everywhere. Read why it's poised to become more important to our energy future. Sodium-ion batteries are one of 10 Breakthrough Technologies this year.

How do our bodies remember? The more we move, the more our muscle cells begin to make a memory of that exercise. Explains: Let our writers untangle the complex, messy world of technology to help you understand what's coming next. "Like riding a bike" is shorthand for the remarkable way that our bodies remember how to move. Most of the time when we talk about muscle memory, we're not talking about the muscles themselves but about the memory of a coordinated movement pattern that lives in the motor neurons, which control our muscles. Yet in recent years, scientists have discovered that have a memory for movement and exercise.

SpaceX successfully launched the'Dragon' capsule on top of its Falcon 9 rocket from Cape Canaveral Air Force Station, Florida for its 19th commercial resupply mission to the International Space Station. The craft took off at 12:29 PM Thursday carrying a 5,700-pound payload that includes genetically-edited'mighty-mice' and Budweiser barley seeds. The Dragon safely deployed from the rocket and is coasting towards the International Space Station– it will reach the craft in three days and spend a total of 30 before returning to Earth with other research and cargo. The mission had been scheduled to launch yesterday, but rough winds detected in the upper atmosphere forced a one-day delay for safety reasons. However, it was a beautiful day in Cape Canaveral with low wind speeds, allowing SpaceX to give the launch another go.

Genetically-edited'mighty mice' are being sent up to the International Space Station today as experts investigate how to limit muscle and bone loss in low gravity. Tweaked to have enhanced muscle growth, the ripped rodents will ride on-board a ship being launched by Elon Musk's rocket company, SpaceX. The mission had been scheduled to launch yesterday, but rough winds detected in the upper atmosphere forced a one-day delay for safety reasons. Lift-off of the Falcon 9 rocket is now expected to take place at 12:29 EST (19:29 GMT) from NASA's Kennedy Space Center in Florida. It's'Dragon' capsule will go on to dock with the space station on Sunday.