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  • Grizzly bears are locally extinct in Colorado. To many people, this might not mean much.

  • And to tell you the truth, it really didn't mean much to me for a while either. I mean,

  • it's not that important. Grizzly bears are still alive, aren't they? They're not on the

  • endangered species list. And it's not like they're at risk of going extinct everywhere, right?

  • Maybe... Maybe not. What I know is that the question brought up more questions.

  • What about the animals that have already gone extinct? The ones that are endangered?

  • What about the fuzzy polar bears in the Arctic? Their habitat is being destroyed.

  • Habitat destruction. Hmmm... That sounds familiar. Oh! Right... That's the reason grizzly bears

  • are extinct in Colorado, along with overhunting. Maybe these are related. Maybe... Maybe not.

  • I don't know. But I know this. Humans are prospering, but only at the expense of other creatures.

  • Around thirty thousand species of animals die every year. That's one species every three hours.

  • Biodiversity is decreasing at a rate one hundred to one thousand times greater

  • than it ever has. So that means by 2100, half of the Earth's life forms will be extinct.

  • This increase in extinction is influenced by many different factors. However, many scientists

  • agree that the cause of this sudden increase is a direct result of widespread human impacts on Earth.

  • Scientists have named the present time period the Anthropocene, a time period

  • defined by the extent of human activities, especially climate change, causing a huge

  • impact on the Earth's ecosystems, all leading to the Earth's largest extinction.

Grizzly bears are locally extinct in Colorado. To many people, this might not mean much.


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B1 中級

生物多様性の損失 (Loss of Biodiversity)

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    阿多賓 に公開 2021 年 01 月 14 日