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.
Buffett gives $3 billion to his kids' foundations. Warren Buffett, chairman and CEO of Berkshire Hathaway, has been leading a push to increase philanthropy among wealthy individuals. Warren Buffett celebrated his 82nd birthday Thursday by announcing an additional $3.1 billion in donations to the charities run by his three children. In 2006, Buffett pledged 17.5 million Class B shares of his firm, Berkshire Hathaway (), to each of his children's foundations.