In reply to Murderous_Crow:
Whilst the footage is upsetting, unfortunately it's a rare record of a common event.
Polar bears are top of the food chain predators. How do you think such predators die?
Well there's injury, disease and old age (*), but basically all of those lead to difficulty and then inability to get enough food and so to starvation.
(*) - I'm ignoring man's impact so far.
There's also lack of prey. Predator numbers are controlled by the number of prey, not the other way around.
What's man's impact, well besides direct killing of predators what we tend to do is reduce the number of prey. One of the ways we do this (rather well) is through climate change.
What should we do about it? There's no easy answer. It's all very well to go on about global warming and all that but it's already too late to stop that. Can we even minimise the effects - I wonder.
Biggest problem I've always seen with conservation is population. Doesn't matter what we do whilst the number of humans is increasing. Until that is sorted, then a lot of species that you and I are familiar with are basically f**ked except in some zoos and embryonic freezers.
Once the population problem is stabilized, then proper planning of what a stable world ecosystem could look like is possible and then more specific actions can be taken for specific species.
Unfortunately, I think that until then any attempts are basically pissing in the wind and before this does happen, we are going to lose a lot