2018 starts with record cold in parts of the Midwest

Bone-chilling cold gripped much of the central U.S. as 2018 began Monday, breaking low temperature records, icing over some New Year's celebrations and leading to at least two deaths attributed to exposure to the elements.

Q&A: How is the growth of bitcoin affecting the environment?

The growth of bitcoin is fueling speculation and debate about the environmental impact of the collective energy needed to power the virtual currency in the era of climate change. Some questions and answers about the issue:

Study predicts a significantly drier world at 2 C

Over a quarter of the world's land could become significantly drier if global warming reaches 2C - according to new research from an international team including the University of East Anglia.