Fossils Help Explain Mammaliaform Evolution from the Jurassic Period

Posted on Categories Discover Magazine

While eyes are said to be mirrors of the soul, for paleontologists, teeth are sometimes the key to distinguishing some evolutionary features. Teeth represent the hardest tissues in a mammal's body and are often the most commonly preserved fossil parts. Recent studies examining teeth, jaws, and inner ear bones from evolutionary precursors to mammals called mammaliaforms are redrawing the group’s family tree. Evolutionary Insights From Mammaliaform Teeth are especially important in examining ma ...read more

For The Maya, Solar Eclipses Were A Sign Of Heavenly Clashes

Posted on Categories Discover Magazine

We live in a light-polluted world, where streetlamps, electronic ads and even backyard lighting block out all but the brightest celestial objects in the night sky. But travel to an officially protected “Dark Sky” area, gaze skyward and be amazed.This is the view of the heavens people had for millennia. Pre-modern societies watched the sky and created cosmographies, maps of the skies that provided information for calendars and agricultural cycles. They also created cosmologies, which, in the ...read more

How Long Do Seeds Retain Their Ability To Sprout?

Posted on Categories Discover Magazine

They gathered in secret, in the dead of night. To find their way, they consulted a map originally drawn more than a century earlier, counting paces and triangulating their position with compasses. When they reached what they hoped was the right spot, they began to dig.It sounds like something from a movie, but it’s a scene that has played out over and over in real life — and will again in about 17 years. The treasure-hunters are a group of scientists at Michigan State University, taking part ...read more

Heart Rate Zones Don’t Perfectly Measure Exercise, But It’s Good to Get Heart Rate Up

Posted on Categories Discover Magazine

Aerobic exercise like jogging, biking, swimming or hiking is a fundamental way to maintain cardiovascular and overall health. The intensity of aerobic exercise is important to determine how much time you should spend training in order to reap its benefits.As an exercise science researcher, I support the American College of Sports Medicine’s recommendation of a minimum of 150 minutes per week of moderate aerobic exercise, or 75 minutes per week of high-intensity exercise. But what does exercise ...read more

Magnesium Levels Change as we Age, but Supplements can Help

Posted on Categories Discover Magazine

As we age, we start looking for ways to slow down its process. Magnesium supplements might help keep age-related illnesses at bay. Various studies have found that magnesium deficiencies are linked to aging. A survey in Magnesium Research found that when we get older, the magnesium levels in our bodies also decrease because of changes in our ability to absorb magnesium.Our magnesium intake decreases because our ability to absorb it in our intestines also decreases. However, a reduced amount of ma ...read more

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