Dan Charles

Honeybees are amazing and adorable, and they suffer when people spray pesticides or mow down wildflowers. We've heard plenty in recent years about collapsing bee colonies.

So Jonas Geldmann, at the University of Cambridge, says he understands how the honeybee became a symbol of environmental conservation.

But he still doesn't like it.

"Lots of conservation organizations are promoting local honey, and even promoting sponsorships of honeybees and that kind of stuff, and that increasingly annoyed me," he says.

A tablespoon of soil contains billions of microscopic organisms. Life on Earth, especially the growing of food, depends on these microbes, but scientists don't even have names for most of them, much less a description.

That's changing, slowly, thanks to researchers like Noah Fierer, at the University of Colorado, Boulder. Fierer think microbes have lived in obscurity for too long. "They do a lot of important things for us, directly or indirectly, and I hope they get the respect they deserve," he says.

This year, trucks and other heavy-duty motors in America will burn some 3 billion gallons of diesel fuel that's made primarily from vegetable oil. They're doing it, though, not because it's cheaper or better, but because they're required to, by law.

The law is the Renewable Fuel Standard, or RFS. For some, especially Midwestern farmers, it's the key to creating clean energy from American soil and sun. For others — like many economists — it's a wasteful misuse of resources.

The federal government's top fisheries experts say that three widely used pesticides — including the controversial insecticide chlorpyrifos — are jeopardizing the survival of many species of salmon, as well as orcas that feed on those salmon.

It's a fresh attack on a chemical that the Environmental Protection Agency was ready to take off the market a year ago — until the Trump administration changed course.

For at least the past decade, the Grocery Manufacturers Association (GMA) has been the unrivaled voice of a vast industry, from neighborhood grocery stores to food manufacturing giants with supply chains that span the globe. Most recently, it's been a powerful force in fighting proposals to require information about added sugar or GMOs on food labels.

Wintertime is a special time of year at Cafe Berlin, located just a few blocks from the Capitol building in Washington, D.C.

This is when they roll out their menu of wild game, such as deer, wild boar, and quail. Regular customers have come to expect it. "They ask, weeks in advance, 'When does the wild game menu start? When does it start?' " says James Watson, one of the restaurant's chefs.

The Trump administration has announced plans to withdraw a regulation that would have required organic egg producers to give their hens room to graze outdoors.

Something unprecedented happened this week. The Food And Drug Administration released its annual accounting of antibiotics sold in America for use in poultry, pigs and cattle, and for the very first time, it reported that fewer of the drugs were sold. Sales of medically important antibiotics in 2016 declined by 14 percent, compared to 2015.

For more than a century, corn has been the most widely planted crop in the country and a symbol of small-town America. Think of the musical Oklahoma, where the corn is as tall as an elephant's eye, or the film Field of Dreams, in which old-time baseball players silently emerge from a field of corn.

Even farmers are partial to corn, says Brent Gloy, who grows some himself, on a farm in Nebraska. (He also graduated from the University of Nebraska. You know, the Cornhuskers.)

The gap between rich and poor is one of the great concerns of modern times. It's even driving archaeologists to look more closely at wealth disparities in ancient societies.

"That's what's so fun about it," says Timothy Kohler, at Washington State University. "It widens our perspective, and allows us to see that the way things are organized now is not the only way for things to be organized."