New York City’s decision to sever ties with its fossil fuel investments is set to prove a catalyst to other cities in the face of the Trump administration’s staunch support for coal, oil and gas interests, according to several leading economists.

Many large organizations have lofty efficiency goals, but struggle to turn them into reality — often because there’s limited buy-in where it truly matters.

Chocolate could run out by 2050 because the crop used to make the confectionary will be harder to grow in a warming climate, according to the National Oceanic and Atmospheric Administration (NOAA).

The use of bioplastics — made from plants instead of fossil fuels — is expected to grow by at least 50 percent in the next five years, according to the European Bioplastics Association.

Eco-conscious diners can rely on restaurants to tell them their fish comes from a sustainable source, but it can be hard to know for sure.

When two sleek Tesla Semis sped across an airport tarmac next to the SpaceX rocket factory in Los Angeles in November, Elon Musk rocked the heavy-duty vehicle market with a disruptive vision of the future. But as eager customers settle in for a two-year wait for the all-electric behemoth, a robust market for heavy-duty electric trucks and buses is already taking shape.