Ancient Weaponry, Reloaded

Posted on Categories Discover Magazine

In the Kent State University laboratory for experimental archaeology, the Spot Hogg Hooter Shooter, an automatic bow launcher, fires arrows filmed by high-speed cameras. The arrows are tipped with stone points, which are replicas of ancient artifacts. The replicas are “worthless ... so we can break them and use them in ways that we can’t with the real artifacts that are priceless,” explains archaeologist Metin I. Eren, who leads the lab. To better understand ancient stone tools ...read more

Our Next Billion Years

Posted on Categories Discover Magazine

Humanity only just arrived on Earth. But its future is in the cosmos. Thirteen point eight billion years after its birth, our universe has awoken and become aware of itself. From a small blue planet, tiny conscious parts of our universe have begun gazing out into the cosmos with telescopes, repeatedly discovering that everything they thought existed is merely a small part of something grander: a solar system, a galaxy and a universe with over a hundred billion other galaxies arranged into a ...read more

Black Holes and Revelations

Posted on Categories Discover Magazine

It sounds crazy. In recent years, scientists have confirmed a remarkable link between two kinds of objects that should, by all rights, have nothing to do with each other: black holes and strange metals. The former are the famous guzzlers of deep space, able to swallow anything — including stars, planets and even light itself — that gets too close. The latter are closer at hand, though less familiar: the stuff left behind when so-called high-temperature superconductors, materials with ...read more

20 Things You Didn't Know About … Color

Posted on Categories Discover Magazine

1. For centuries, academics thought colored light was modified white, or “pure,” light. (We’ll get back to how wrong they were in a bit.) 2. And color sometimes is a modifier. For example, coloring foods goes back at least 3,500 years, when ancient Egyptians added wine and other colorants to candy to increase its visual appeal. 3. The history of coloring food is stained with nefarious deeds. Toxic lead- and mercury-based compounds were once pervasive in Asia and Europe to add c ...read more