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POPSWhales may die from heartbreak too For Yves Paccalet, a French naturalist and philosopher who helped push through the 1986 moratorium, the intelligent and highly-social creatures may be so exhausted from their centuries-long combat with humankind that they have simply have given up the fight. "The psychological consequences of our aggression have compromised their will to live," said Paccalet, who worked extensively with French marine explorer Jacques-Yves Cousteau.