Thread by @BiIndia

#10YearChallenge | People are using the viral '10-year challenge' as a stark warning about what's happening to our planet
businessinsider.in/people-are-usi…

The top photo here shows the Rhone glacier in Switzerland now, while the bottom shows how much more ice there was in 2009. Glaciologists think half of Switzerland's small glaciers — and the streams they feed — will be gone within the next 25 years, according to Reuters.

Although many glaciers have shrunk dramatically in the last decade, juxtapositions that show their changes over a longer period of time are even more striking.

These photos of Alaska's Muir Glacier are placed on top of each other so you can swipe back and forth to see how much has melted over the last 120-plus years.

Different glacial systems — if and when they melt — may impact some coastal cities more severely than others, according to @NASA research.

Scientists even made an interactive tool that lets you pick from more than 290 cities to explore how they might be impacted by certain glaciers melting.

Higher ocean temperatures and acidification cause corals to expel the algae living in their tissues and turn white — what's known as coral bleaching. Swipe back and forth here to see it for yourself.

Rivers and lakes are also shrinking as growing populations demand more water. Pesticide and fertilizer run-off from farmland can also pollute what little is left.

Forests in South America and Central Africa are also shrinking because of logging and deforestation.