biology

Category archives for biology

“Do not look at stars as bright spots only. Try to take in the vastness of the universe.” -Maria Mitchell The analogies between small-scale, living things and large-scale, cosmic entities are abundant: between a neuron and the Universe’s large-scale structure; between an atom and a solar system; between the stars in a galaxy and the…

“Mars is much closer to the characteristics of Earth. It has a fall, winter, summer and spring. North Pole, South Pole, mountains and lots of ice. No one is going to live on Venus; no one is going to live on Jupiter.” -Buzz Aldrin When we think about life in the Universe, we think about…

Was Earth Born With Life On It? (Synopsis)

“When you arise in the morning, think of what a precious privilege it is to be alive — to breathe, to think, to enjoy, to love.” –Marcus Aurelius How old is life on Earth? If all you had to go on was the fossil record, you’d run into severe trouble once you went back more than one…

When we look at the vast expanse of stars in the night sky, we can’t help but wonder what else is out there. Not just at the gas giants, rocky worlds, comets, asteroids, moons, and homeless planets strewn throughout our galaxy and all the galaxies beyond our own, but about what life — what possibilities…

“If I had to describe myself to an alien I’d say I was bigger than the average human, enjoy a drink or two with a good meal and have a bigger head than most. I’d also say I’m really handsome — especially if they were a female alien.” –Dwayne Johnson The fact that Earth has not only…

“The impact of an attacking tiger can be compared to that of a piano falling on you from a second story window. But unlike the piano, the tiger is designed to do this, and the impact is only the beginning.” –John Vaillant I can’t fault you if you’ve given up entirely on the perfume/cologne industry.…

“You can spend too much time wondering which of identical twins is the more alike.” –Robert Brault Earlier today, NASA announced the “most Earth-like exoplanet yet,” a planet just 60% larger in radius than our own, orbiting a star of the same spectral class as our Sun and with an almost identical orbital period: 385…

Dark Matter: Giver of Life (Synopsis)

“The privilege of a lifetime is being who you are.” –Joseph Campbell When you think about dark matter, you probably think of a few things: how mass and gravity don’t appear to line up, how there isn’t enough normal matter to account for the motions we see on scales of galaxies and up, and how…

“A vacuum is a hell of a lot better than some of the stuff that nature replaces it with.” –Tennessee Williams The depiction of dying in space — by exposure to its terrifying vacuum — is incredibly varied, from freezing to swelling and bulging to simply exploding. For this week’s Ask Ethan, we take on…

Death is not the end (Synopsis)

“End? No, the journey doesn’t end here. Death is just another path, one that we all must take. The grey rain-curtain of this world rolls back, and all turns to silver glass, and then you see it.” –J.R.R. Tolkien No matter how well we care for our bodies, they eventually wear down, give out, and…