Electric bikes just may be the biggest transportation revolution of our generation, helping millions replace car usage with more affordable, more efficient alternatives. But there’s no denying that ...

The e-bike revolution started with the pandemic and has been hailed as the answer to everything from traffic congestion to greenhouse gas emissions to fitness to depression. Indeed, it has the ...

Your next e-bike or robot vacuum might not have a lithium-ion battery. The ubiquitous batteries have problems—they’re slow to charge, wear out quickly, and sometimes lead to catastrophic fires. But ...