Icicles and ice dams are caused when water freezes along gutters or downspouts from a mixture of temperature fluctuation and heat from your home. Heat rising through your roof melts accumulated snow ...

The cool conditions which have allowed ice caps to form on Earth are rare events in the planet's history and require many complex processes working at once, according to new research.

For most of its history, Earth has existed in a greenhouse state—warm, ice-free, and rich in atmospheric carbon dioxide. The ...