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The Hindu:

Indigenous nuclear submarine INS Arihant has suffered major damage due to ”human error” and has not sailed now for more than 10 months, say sources in the Navy.

Arihant is the most important platform within India’s nuclear triad covering land-air-sea modes.

Arihant’s propulsion compartment was damaged after water entered it, according to details available with The Hindu. A naval source said water rushed in as a hatch on the rear side was left open by mistake while it was at harbour.

Scientists studying wildlife on the Aldabra Atoll island in the Indian Ocean say they have discovered a small bird species that re-evolved after going extinct 136,000 years ago, according to the Independent.

The white-throated rail, which is a flightless bird, has gone through an extremely rare process called “iterative evolution” in which it repeats evolution. The rail had previously evolved to become flightless before going extinct the first time. The bird species once again evolved, scientists said after comparing fossils from the extinct species to those recently discovered on the island. The white-throated rail is about the size of a chicken, and originally migrated from Madagascar when the species could fly.

Daily Beast

According to a recently published study in the peer-reviewed Zoological Journal, “sediments from the Aldabra Atoll in the Indian Ocean show that the island has been completely submerged multiple times, wiping out all species inhabiting it. Every time, every species on the island went extinct — but the Aldabra rail has returned, again and again.”

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