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  2. Polar bear conservation - Wikipedia

    en.wikipedia.org/wiki/Polar_bear_conservation

    The key danger for polar bears posed by the effects of climate change is malnutrition or starvation due to habitat loss.Polar bears hunt seals from a platform of sea ice. Rising temperatures cause the sea ice to melt earlier in the year, driving the bears to shore before they have built sufficient fat reserves to survive the period of scarce food in the late summer and early fall.

  3. Tipping points in the climate system - Wikipedia

    en.wikipedia.org/wiki/Tipping_points_in_the...

    The 2019 IPCC Special Report on the Ocean and Cryosphere in a Changing Climate defines a tipping point as: "A level of change in system properties beyond which a system reorganises, often in a non-linear manner, and does not return to the initial state even if the drivers of the change are abated. For the climate system, the term refers to a ...

  4. List of periods and events in climate history - Wikipedia

    en.wikipedia.org/wiki/List_of_periods_and_events...

    Pliocene climate became cooler and drier, and seasonal, similar to modern climates. 2.5 to present: Quaternary glaciation, with permanent ice on the polar regions, many named stages in different parts of the world

  5. Timeline of environmental history - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_environmental...

    The time from roughly 15,000 to 5,000 BCE was a time of transition, and swift and extensive environmental change, as the planet was moving from an Ice age, towards an interstadial (warm period). Sea levels rose dramatically (and are continuing to do so ), land that was depressed by glaciers began lifting up again , forests and deserts expanded ...

  6. List of Arctic expeditions - Wikipedia

    en.wikipedia.org/wiki/List_of_Arctic_expeditions

    1860: Paul A. Chadbourne, a Williams College professor, conducts the Williams College Lyceum of Natural History expedition to Greenland. [9] 1860–1861: American Arctic Expedition led by Isaac Israel Hayes who claims to see the Open Polar Sea; 1860–1862: First expedition led by American Charles Francis Hall searching for Franklin

  7. 2 Degrees Will Change The World - The Huffington Post

    data.huffingtonpost.com/2015/11/two-degrees-will...

    World leaders are meeting in Paris this month in what amounts to a last-ditch effort to avert the worst ravages of climate change. Climatologists now say that the best case scenario — assuming immediate and dramatic emissions curbs — is that planetary surface temperatures will increase by at least 2 degrees Celsius in the coming decades.

  8. Polar bears, pushed on land by climate change, get their own ...

    www.aol.com/news/polar-bears-pushed-land-climate...

    As climate change diminishes sea ice from coastal communities in the Arctic and the subarctic, researchers expect polar bears to range farther into the towns

  9. History of climate change science - Wikipedia

    en.wikipedia.org/wiki/History_of_climate_change...

    From ancient times, people suspected that the climate of a region could change over the course of centuries. For example, Theophrastus, a pupil of Ancient Greek philosopher Aristotle in the 4th century BC, told how the draining of marshes had made a particular locality more susceptible to freezing, and speculated that lands became warmer when the clearing of forests exposed them to sunlight.