Cannabis is one of the most widely used drugs in the world. While there are only a few countries where cannabis is legal for recreational use, many more countries have legalized the use of cannabis for medical reasons.
Does anyone have sovereignty over the moon? And can anyone buy it?
Astronomers observed a major eruption from a volcanic comet flying through the solar system, likely spewing more than 1 million tons of debris into space.
Planetary scientists have pinpointed the likely location of a massive asteroid impact that triggered an enormous tsunami on the Red Planet around 3.4 billion years ago.