Read how an 18-year-old scripted history when NASA sent a 3D-printed satellite he built into space.

Rifath Sharook, an 18-year-old from Karur in Tamil Nadu, scripted history when NASA sent a 3D-printed satellite he helped build into space.

The 'KalamSat', named after APJ Abdul Kalam, is the world's smallest satellite – with a weight of 64 grams.

Read the story of a class X student who invented a skin patch that could detect ‘silent heart attack’.

Akash Manoj, a Class X student from Tamil Nadu, has developed a skin patch that can detect 'silent heart attacks'.

The skin patch, that can be attached to the ear or the wrist, releases a ‘positive’ electrical impulse, which attracts the negatively charged protein released by the heart to signal a heart attack.

A biodegradable water bottle, created by a class 8 th student, uses everyday products to keep your water cool & fresh.

Having read that reusing plastic water bottles may cause cancer, Anushka Srivastava, a class 8th student from Bhopal, thought about making her own eco-friendly water bottle.

To make the bottle, she used two layers of coir with sphagnum moss in between and with khuss inner lining.

A mixture of urad daal, jaggery and vinegar was further used as binder. Coir makes the bottle water resistant, the moss layer acts as an insulator, and khuss layer keeps the water fresh for a long period of time

Read how a class XI student created a pair of glasses for the visually impaired to navigate ‘hands-free’.

Anang Tadar, a Class XI student from Arunachal Pradesh, has developed a pair of glasses to help the visually-impaired navigate "hands-free".

Tadar’s goggles, referred to as G4B, use echolocation technology – which mimics the way bats sense their surroundings – to alert visually-impaired wearers to objects within 2 metres of its field view.

The cost of sea litter in the EU has been estimated at up to €630 million per year...

The cost of sea litter in the EU has been estimated at up to €630 million per year. It is mostly composed of plastics, which take hundreds of years to break down in nature, and has the potential to affect human health through the food chain because plastic waste is eaten by the fish that we consume.

Hardiman developed an unmanned robot, an aqua drone that cruises around urban waters such as harbours, marinas and canals, eating up marine litter like a Roomba of the sea. The waste is collected in a basket which the WasteShark then brings back to shore to be emptied, sorted and recycled.

The design of the autonomous drone is modelled on a whale shark. These giant filter feeders swim around with their mouths open and lazily eat whatever crosses their path. It’s powered by rechargeable electric batteries, ensuring that it doesn’t pollute the environment through oil spillage or exhaust fumes, and it is relatively silent, avoiding noise pollution. It produces zero carbon emissions and the device moves quite slowly, allowing fish and birds to merely swim away when it gets too close for comfort