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Food waste is a huge problem. How big? About 931 million metric tons. That's how much food that researchers with the United Nations estimate was wasted in 2019, according to the Food Waste Index Report 2021, which surveyed 54 countries, finding that the majority of wasted food (61%) comes from homes while restaurants and other food s

Few odors are as pleasing as "new car smell"—and not just because it's nice to be in a brand new car. But while the scent may be strangely satisfying, the fact is that it's pretty much just a combination of 50+ chemicals (known as "volatile organic compounds") that are released into the c

According to Guinness World Records, the first person to be charged with speeding was Walter Arnold of the English village of Paddock Wood, Kent. On Jan. 28, 1896, Arnold was spotted going four times the speed limit in his 19th-century Benz—but since the speed limit at the time was just two miles per hour, that meant he was not going too fast by today's standards. The constable had to chase him down on

Much like the rings of a tree can tell you its age and provide clues about the life it has lived, so too does the long tusk of the narwhal. Recent research led by a bioscience professor at Denmark's Aarhus University has shown that this peculiar arctic whale adds a layer to its distinctive tusk each year. And not only do these layers offer insight into the ag

Do you get the feeling that there are more twins around these days than there used to be? No? Well, you should, because according to a new study in the journal Human Reproduction, the "twinning rate" has increased by one-third since the '80s—up from 9 to 12 twins per 1,000 deliveries. Currently that adds up to about 1.6 million twins born each year a

Your dog averts his eyes and adopts a submissive posture after you catch him chewing something he's not supposed to. That means he knows that he's done something wrong and is sorry for it, right? Well, probably not, scientists say. It's more likely that the behaviors that owners associa

Not only do dogs dream as they sleep, scientists think that they dream similarly to us and replay moments from their day. You can tell that a dog is dreaming if they are twitching their legs or bark in their sleep.

The presence of a leash, the s*x of the owner, and the s*x of the dog all play a part in the aggressiveness of a dog when they're being walked. Dogs being walked by men are four times more likely to attack and

Dogs' urine contains markers that inform other dogs of its presence, social standing, and s*xual availability. Dogs lift their legs as high as they can so they can "distribute their message" better and allow its sce

Dogs are not, in fact, trying to clumsily bury their p**p when they scratch the ground after they go. They are just performing yet another territory-marking ritual. With the glands on their paws, they spread their scent and let other dogs know they are around.

In addition to being able to move in various ways, dogs' ears are also able to detect much higher frequency sounds than human ears. In fact, dogs can hear sounds that are two times beyond our range—and it appears small dogs are actually better at it. According to Science Focus, that's because the smaller a mammal's head is, the higher

Dogs have sweat glands only on their paws, not the rest of their bodies. That little surface area isn't enough to cool them down, however, which is why they ventilate and exchange heat through panting

Thanks to science, you can know, for a fact, that your dog loves you back. A 2015 study at Azabu University in Japan found an uptick in the level of oxytocin (sometimes known as "the love hormone") in both dogs and their owners when they stare at each other

Dog noses have unique patterns that can serve to identify them, similar to human fingerprints. And in April 2021, dog food company IAMS launched an app that uses this fact to help reunite lost pups with their owners. After you download NOSEiD, scan your pet's nos

They're good for more than just taking scritches. These 18 muscles allow dogs to move their ears in intricate ways, which is important to picking up sounds. Plus, your dogs ears can give you a clue as to how they're feeling: If they're laying flat back against their head, your pooch may be scared. If they're pointing straight up, they're alert and on the case.