Over two-thirds of the Earth’s surface is covered with water, with nearly 97% of this being in the oceans. Oceans are home to amazing creatures—from microscopic phytoplankton which produce most of the Earth’s oxygen, to gigantic whales which take your breath away. World Wildlife Day is celebrated each year on March 3rd to celebrate and raise awareness about the diverse wildlife on our planet. The theme for 2019 is “Life below water: for people and planet" which aligns with goal 14 of the United Nations Sustainable Development Goals, i.e.
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A team of researchers from Indian Institute of Technology Bombay, Mumbai, UNESCO-IHE Institute for Water Education, Netherlands, and the Department of Harbour, Coastal and Offshore engineering, Netherlands have come up with a cost effective and efficient method to measure the depth of shallow water. Combining satellite imagery and echo-sounding data, along with a machine learning technique, the team has produced an economical solution to the depth measurement challenge.
Whales are magnificent creatures. Not only are they the some of the largest mammals on the planet, they also have the longest mammal migrations. Why and how do whales migrate? And what are some of the challenges they face on the way?
The Earth’s interior is still a mystery to us. While we have sent missions to probe the outer reaches of our Solar system, the deepest boreholes on Earth go down to only a few kilometres. The only way to learn what’s going on deep inside our planet, in the core and the mantle, is by indirect methods.