Kate Adamala started work on a cell in which the natural molecular structure is reversed. Then a possible doomsday scenario became clear.

For people with two hands, one is usually dominant. On a molecular level, earthly life takes this to the extreme. All of the DNA in living things twists to the right, whereas the protein building ...

For whatever reason, life formed on Earth with right-handed DNA and left-handed proteins. But scientists have long wondered if a mirror version of life could be created. While these “mirror cells” ...

If it already feels like every day is like an apocalypse in the making here's another existential risk to ponder. Imagine a world where life doesn’t rely on the same DNA and proteins as all living ...

This image shows the four different types of mirrors on the Webb telescope. From left to right are: a primary mirror segment, the secondary mirror, tertiary mirror and the fine steering mirror. The ...

SAN FRANCISCO (KGO) -- Mirror, mirror on the wall--look inside the one at the Exploratorium, and you'll see some pretty astounding optical tricks. Designed to be part of a flight simulator, a small ...