Thursday marks the 20 th anniversary of the 2004 Indian Ocean tsunami, one of the deadliest natural disasters in modern history. The Boxing Day quake was one of the largest ever recorded.

There is a “gravity hole” in the Indian Ocean — a spot where Earth’s gravitational pull is weaker, its mass is lower than normal, and the sea level dips by over 328 feet (100 meters). This ...

Almost ten years ago to the day, the world watched aghast as scenes of carnage unfolded across the countries of the Indian Ocean. The 2004 tsunami was one of the most devastating natural disasters ...