The Environmental Protection Agency has announced it would allow gas stations to continue selling slightly cheaper E15 this summer in a move that may be good for drivers and corn growers but will likely contribute to air pollution.

Across America, people of color are exposed to more air pollution than whites from industry, vehicles, construction and many other sources, a new study has found.

If the world food system keeps on current trajectories, it will produce near 1.5 trillion tons of greenhouse gases (almost 1.4 trillion metric tons) over the next 80 years, the study found. That’s coming from belching cows, fertilizer, mismanaged soil and food waste. — If farming got more carbon efficient — by using less fertilizer, managing soil better and doing better crop rotation — it would slice nearly 600 billion tons of greenhouse gases (540 billion metric tons). — If farms could increase yield through genetics and other methods, it would trim almost 210 billion tons of greenhouse gases (190 billion metric tons). Or if the world does each of those five things but only half way, emissions would plummet by almost 940 billion tons (850 billion metric tons).