In the 1984 film Iceman, a prehistoric man who has been frozen in a glacier for 40,000 years is revived by a team of curious scientists. It’s a fascinating premise. Scientists have spent their entire careers deliberating over the life history of ancient mummies like Ötzi the Iceman, who was found frozen in the Alps around 5,000 years after his death. But what if we could just wake him up and ask him? Unfortunately, the prospect of reviving a frozen mummy like Ötzi from an ice-induced slumber ...read more
They go by many names – pigs, hogs, swine, razorbacks – but whatever you call them, wild pigs (Sus scrofa) are one of the most damaging invasive species in North America. They cause millions of dollars in crop damage yearly and harbor dozens of pathogens that threaten humans and pets, as well as meat production systems.Although wild pigs have been present in North America for centuries, their populations have rapidly expanded over the past several decades. Recent studies estimate that s ...read more
Humans have sailed the world’s oceans for thousands of years, but they haven’t all reached port. Researchers estimate that there are some three million shipwrecks worldwide, resting in shallow rivers and bays, coastal waters and the deep ocean. Many sank during catastrophes – some during storms or after running aground, others in battle or collisions with other vessels.Shipwrecks like the RMS Titanic, RMS Lusitania and USS Monitor conjure tales of human courage and sacrifice, sunken ...read more
Year after year, new scientific discoveries and advancements are made, and 2023 has been no different. From spooky sharks to Benjamin Franklin to head-tilting puppies, our top stories of 2023 are ones for the record book. Here are 10 of our favorite stories from the last year. 1. That Irresistible Head Tilt: Why Do Dogs Turn Their Heads to One Side?(Credit: Mary Swift/Shutterstock)How could anyone resist such an adorable gesture? We know we can’t. There are several theories on why dogs tilt t ...read more
The year 2023 brought a flurry of pivotal advancements to the field of genomics. Three large databases — one of humans, one more broadly of mammals, and one of primates (see sidebar on page 54) — are promising brand new revelations about the source code of life, especially as it pertains to our own species. A notable milestone for a one-of-a-kind repository of ancient DNA could hold similar insights from our ancestors, as well.What Is a Genome Database?These massive genomic repositories will ...read more
When winter arrives, daylight and food is scarce. Hunkering down to avoid the cold probably seems quite appealing. In the animal kingdom, many species have adapted to do just that by hibernating. You may think of bears when you think of hibernation. But, bears don’t count as true hibernators. Rather they enter a state called “torpor,” a hibernation-like state that’s more akin to a deep sleep. While in this state, a bear’s temperature doesn’t drop drastically, and they can walk somew ...read more
Regardless of how you celebrate end-of-year holidays, food is probably central to your winter festivities. And a trio of spices – cinnamon, nutmeg and ginger – feature in many dishes and drinks and are an unmistakable part of the scent profile we associate with the holiday season.As a plant scientist, I was curious to know how these spices, grown in the tropics, became so closely associated with the Northern Hemisphere’s winter holidays. Just as cranberries’ fall harvest makes them a ...read more
When middle school math teachers completed an online professional development program that uses artificial intelligence to improve their math knowledge and teaching skills, their students’ math performance improved.My colleagues and I developed this online professional development program, which relies on a virtual facilitator that can – among other things – present problems to the teacher around teaching math and provide feedback on the teacher’s answers.Our goal was to enhance teachers ...read more
The sore throat. The packed and painful sinuses. The fatigue. Sure, it’s “just a cold,” but it can feel miserable. And after several days, one can easily wonder when they can expect to feel better.Scientists are still learning about colds and how they impact the body. One thing researchers know for sure — symptoms can last the better part of a month. If it seems like someone in the household is always sick, colds might be the culprit. Adults typically catch two to four colds per year. ...read more
Your heart’s job is to keep your pulse steady to pump blood throughout your body. Sometimes your heart rate is slower when you’re relaxing, and sometimes it’s faster when you’re exercising or stressed. If your heart’s ability to keep the beat starts to go awry, cardiac electrophysiologists like me look for outside help from an implantable device.There are two common implantable devices for the heart: artificial pacemakers and defibrillators. Artificial pacemakers keep blood and ox ...read more