1. Physical Weathering. In physical weathering the rocks are broken down into smaller pieces, but the chemical composition of the rock remains the same. Temperature Change. Hot temperatures can give rise to thermal expansion in rocks and cool temperatures can cause rocks to contract.
Buffett Donates $2.8 Billion, Breaks Personal Giving Record. Warren Buffett has bested his own personal philanthropy record once again, donating $2.8 billion to the Bill and Melinda Gates Foundation and several other charities as part of his annual giving pledge. The gifts given Monday top last yearâs $2.6 billion donation.
Bill Gates Just Wrote A Valentine's Love Letter To Warren Buffett. Bill Gates still remembers the call that changed his life â and the lives of a few million other people â shortly after the untimely death of Warren Buffettâs first wife, Susie, whom the Oracle of Omaha had counted upon to give away his historic fortune.