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Archive: Feb 2019

Scientists create an expanded 8-letter DNA genetic code

Each cell in a living organism has an instruction manual known as the genome. These instructions are spelled out using letters, called bases, that pair with one another to form long double-stranded molecules of helical DNA. Life as we know it uses 4…

Lessons from the Human Genome Project

by Rebecca Fine figures by Elayne Fivenson The Human Genome Project, one of the most ambitious scientific projects ever undertaken, achieved a monumental goal: sequencing the entire human genome. Since its completion in 2003, this project has laid the…

Dogs and humans were buried together in 6,000-year-old graves

Dogs are “man’s best friend,” but how long have they been our four-legged companions? A recent study suggests that dogs and humans may have formed close relationships as early as 6,000 years ago — a relationship that involved humans feeding the dogs, but…

Extracellular DNA, in Plant Health and Hardship

by Sophia Swartz figures by Abagail Burrus It was only three weeks into the fall semester, and I was starting to sniffle. When I had woken up that morning with a tell-tale tickle in the back of my throat, I had tried to deny the obvious. However, by the…

New Drug May Prevent Mosquitoes From Wanting to Bite You

While you are likely familiar with the annoying experience of being a mosquito’s ‘meal of the day’, more is going on behind the scenes of that insect bite than meets the eye.  Mosquitoes, which are drawn to human scent and breath, require proteins from…

Scientists identify brain patterns associated with consciousness

Lying down after a long day, your head hits the pillow and your eyes close. The next minute you wake up with no recollection of the past several hours. Consciousness is an elusive concept – it is temporarily lost when we sleep, altered by drugs,…