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.
Investors who thought Berkshire Hathaway shares might have been affected by Mr. Buffettâs domestic bliss saw hardly a blip in the price yesterday â up $296, or 0.3 percent, to close at $96,097. The marriage is the second time this year that Mr. Buffett has made headlines. In June, he agreed to donate the vast bulk of his $40 billion personal fortune to foundations run by Bill and Melinda Gates, his children and one named for his late wife.