>
What really happens to your bag after you check it in?
New LITHIUM METAL battery DOUBLES energy capacity! Has CHINA beaten us to it AGAIN?
Your Body's Urgently Trying to Tell You Something
Neuroscientists just found a hidden protein switch in your brain that reverses aging and memory loss
NVIDIA just announced the T5000 robot brain microprocessor that can power TERMINATORS
Two-story family home was 3D-printed in just 18 hours
This Hypersonic Space Plane Will Fly From London to N.Y.C. in an Hour
Magnetic Fields Reshape the Movement of Sound Waves in a Stunning Discovery
There are studies that have shown that there is a peptide that can completely regenerate nerves
Swedish startup unveils Starlink alternative - that Musk can't switch off
Video Games At 30,000 Feet? Starlink's Airline Rollout Is Making It Reality
Grok 4 Vending Machine Win, Stealth Grok 4 coding Leading to Possible AGI with Grok 5
Weight is everything in aviation, and it's even more important when you're talking about energy-intensive vertical takeoff and landing like the coming eVTOL air taxi contenders are promising. Nearly every company on that list is building its prototypes using lithium batteries, but the simple fact is, lithium batteries have terrible energy density.
Commercial air taxis will need to fly all day, not spend long hours hooked up to charging stations, so every company that's planning around lithium is praying for a magical new chemistry to emerge from a test lab that doubles or triples the capacity of the best batteries available today.
That may well happen, but hydrogen is beginning to look like an excellent alternative. It's a pain in the butt when it comes to ground transport, but in electric aviation it might find a perfect use case. It offers much higher energy density, promising excellent flight endurance, and it lets you fill up with fuel in minutes, just like topping up your car's gas tank.