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The flexible electric car platform is innovative, but the fuel-cell version is freighted with hydrogen’s flaws.
European researchers have built prototypes that combine plastic solar cells with ultrathin, flexible batteries. But don’t throw away your battery recharger just yet.
A secret, fast-charging, powerful battery.
Washington’s growing interest could help make plug-in hybrids more affordable. The payoff: 150 miles per gallon.
A small, powerful rope-climbing device can pull a person up 30 stories in 30 seconds.
By measuring nanoscale forces, researchers learn to make lithium-ion batteries that pull themselves together.
Recent advances in battery chemistry and systems design could lead to working prototypes by year’s end.