Deborah Pfingston's son Andrew Ashcraft, 29, was one of 19 firefighters killed fighting wildfires in Arizona.
She paid a moving tribute to him, saying he 'lived and breathed' his work.
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It comes as 22 charities signed an open letter vowing to improve safeguarding, and apologising for 'failures' in the sector.
Olympic freestyle skier Gus Kenworthy said the dog meat farm in South Korea was 'one of the saddest places I've seen'.
Two-year-old Casper Platt-May and his six-year-old brother Corey died in the crash in Coventry on Thursday.