Earlier this year we had polar bear penis bones supposedly breaking due to environmental toxins; this week we have their brains damaged.
The March 15 ScienceNordic story (“Chemical pollution is causing brain damage in polar bears”) came complete with a photo of a bear (copied below, provided by research co-author Rune Dietz) that is presumably meant to convey what a “brain damaged” polar bear might look like — if not, perhaps another photo would have been a better choice?
Except, the research only showed there theoretically might be damage but the researchers didn’t bother looking for it before shouting out their findings. All about the scary message, these folks: the very large uncertainties and speculation in their research be damned.
Posted in Advocacy, Pollution, Sea ice habitat
Tagged brain damage, Canada, chemicals, climate change, Derocher, environmental contaminants, global warming, Hamilton, last refuge, media hype, Pederson, polar bear, predictions, sea ice decline, Sonne, threatened, toxins, worst-case scenario
I’ve not written much about this subpopulation before but with the flurry of interest over “weakened” penis bones and toxic chemicals, I thought it was time to remedy the situation.
Posted in Life History, Pollution, Population, Sea ice habitat
Tagged contaminants, Davis Strait, diet, East Greenland, harp seals, hooded seals, movements, PBSG, PCBs, persistent organic pollutants, Persistent organohalogen contaminants, POC, polar bears, pollutants, POP, population assessments, seal pups, threatened, toxins, West Ice
This is a short discussion about research on polar bear penis bones, regarding a new paper that sent several of the Internet’s most juvenile science headline writers off the deep end.1
Short quiz first. Above are the penis bones (each called a baculum, plural bacula) of three marine mammals – one is from a bearded seal, one from a polar bear and another from a Steller sea lion. Which one do you think is the polar bear? Answer below.