According to Bloomberg, Apple CEO Tim Cook called the White House earlier this week to ask Donald Trump not to pull out from the Paris climate deal. The agreement is an important part of Barack Obama's legacy and dictates how countries can eliminate fossil fuels and add clean energy to help prevent further global warming. Cook, who is a massive proponent of green energy, is just the latest CEO to chime in on the climate deal. A group of 25 CEOs of major companies and corporations signed a letter favoring the pact, which was published earlier today in the New York Times and Wall Street Journal.