I remember when I tweeted everyday after the 2020 election..."Another day without our President". Now I proudly post, "Another day with our President". 🇺🇸 🥰
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Not a single living creature dares to cross this invisible line on the map.For 30 million years, an unseen barrier has sliced the planet in two—separating the lush, teeming wilds of Asia from the ancient, alien world of Australia and Oceania. This is the Wallace Line, discovered by the legendary naturalist Alfred Russel Wallace in the 19th century.On one side roam tigers, elephants, orangutans, and a riot of Asian species. On the other side live kangaroos, koalas, tree kangaroos, and bizarre marsupials found nowhere else on Earth. The contrast is so stark that even the birds, fish, and microbes largely refuse to mix. Walk just a few kilometers across certain islands in Indonesia, and the entire cast of nature changes as if someone flipped a cosmic switch.Scientists still can't fully explain it. The straits are deep, yes—but that doesn't account for why strong-flying birds or ocean-swimming fish respect this invisible wall so strictly. The Wallace Line remains one of nature's greatest enduring mysteries: a biological border that has shaped evolution for tens of millions of years, turning two neighboring regions into completely separate kingdoms of life.