Opinion by PETA

By Karin Bennett

Live and let (die) live: So goes Sir Paul McCartney’s new hit … against NASA’s pricey plan to bankroll the zapping of dozens of squirrel monkeys in cruel radiation experiments.

While his animal rights efforts are legendary, many people may not know that Paul also has a ton of space cred. It’s true: He’s an enthusiastic supporter of space exploration who has performed for the crew of STS-114 and worked with NASA to beam Beatles music into space.

In his letter to the space agency, Paul writes:

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