Gas-powered bicycles are an emerging boom vehicle for Tucsonans as a cheap and efficient way to get around the Old Pueblo. But their growing presence on Tucson streets has city officials concerned ...

HANOI, Vietnam (AP) — Vietnam is split between two visions: the rumbling, reliable gas-powered motorbikes that now rule the roads, and sleek, silent electric bikes the government says are its future.

In a bid to combat climate change, nations worldwide are fast-tracking their plans to phase out gas bikes by 2030. This significant shift presents a myriad of benefits, yet it also brings about a set ...