Although October was below average in temperatures across the contiguous United States, the year 2012 still ranks as the warmest year ever recorded since 1895.
In the last few years, scientists have made great inroads in understanding the crucial interactive role gut bacteria play in harvesting nutrients, assisting immune systems, and protecting the host against pathogens.
The sun generates about 400 billion billion megawatts of power and it has done so for five billion years. Nuclear fusion - combining lighter atoms to make heavier one - is what makes it possible.
An international team lead by scientists from the University of Zurich shows that it may be possible to use atomic clocks to resolve structures within the Earth.