BBC Nature Orca menopause helps protect sons Killer whales live on after menopause to protect sons BBC News BBC Nature News www.bbc.co.uk BBC News killer whales Killer whales live on after menopause to protect sons BBC Nature News killer whales BBC Nature News BBC Nature News killer whales BBC Nature News BBC Nature News An article menopause in Killer Whales. BBC News mother orcas continue to protect their adult sons