Normally, this gene turns on when a dog is growing in the womb to make a molecule called a growth factor that guides the proper formation of limbs and paws. (insidescience.org)
In some cases, he noted, the chemistry necessary to make the molecules of life would be much easier without water being present. (sciencedaily.com)
For the first time, we've made a molecule by pressing two atoms together to make them bond on command. (newscientist.com)