Heartbreaking -- Will polar bear extinct?

Recently, they've been showing videos on the tv about north pole and the polar bears. Its been a big impact on me when i look at them. We humans, have spoilt the environment badly. Temperature is rising everywhere, and it caused a big problem to the polar bears. Ice Berg are melting, causing lesser and lesser lands for the polar bears. They have lesser land to rest on.

On 1 of the video, it show this polar bear. The ice berg he was walking on, was melting and thinning, knowing his own weight, he learnt to step lightly on the ice, but sadly, he still fell into the water. having no land nearby, he start to swim.. and he swam for like 2+ days before he finally find land to rest on again. By then, he is tired and hungry. The only food source he found was a bunch of sea elephant. But their skin were too tough and thick, and being lethargic, he got no energy to chew on them. So the poor polar bear, knowing that his time was up, dig a big hole and collapse into it. HE DIG HIS OWN GRAVE AND COLLAPSE IN. Heartbreaking for me to see that scene.

Next video show this polar bear who was also very tired from swimming, he got no place to go but to go near human staying area. He meant harmless, but being a human who see a polar bear, will find it scary. They sent 2 pet dogs, which was actually smaller than the bear to charge at the bear. The polar bear was scared of them. He is a bear! But because he had no food for days, and no where to rest, he know he cant fight the dogs. And next, the human killed the bear with a stick. All the bear can do was to step back til a dead end, and got killed by the stick.

I know there is a limit on how far I can bring this message across, but at least for me, I learnt the importance of recycling, to use lesser resources. Need to learn to buy lesser (unneccessary items, can save $$ also =D ). And for now, at least I hope everyone besides me, do their part, recycling is not that difficult. Spare a thought for our next generation, for the ecosystem.