How much energy does a dolphin use to swim?

From foraging for prey to evading predators, ship strikes or other dangers, a dolphin's survival often hinges on being able to crank up the speed and shift its swimming into high gear.

Natural gas bans are new front in effort to curb emissions

Lawmakers in New York are considering the nation's first statewide ban on natural gas connections in new buildings, following dozens of local governments that have passed similar policies in the past two years.

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