The coming of the New Year often brings about feelings of nostalgia as we reminisce about the previous calendar year. Looking back at 2015, we as humans have quite a bit to be proud of: the granting of women’s voting rights in Saudi Arabia, the development of a new highly effective drug for the prevention of HIV infection, and of course, the new Star Wars film. However, arguably one of the most significant accomplishments of 2015 was the Paris Agreement – the first-ever universal, legally-binding global climate deal.
The image before you is known as Darwin’s tree of life. Today, most scientists immediately recognize it as a basic idea in evolutionary theory; yet when Darwin drew it in 1837, it was simply a sketch drawn in an attempt to understand the observations he made on the voyage of the Beagle. Continue reading