UAVs are Aircrafts that are piloted remotely by some person who is at a different place. These UAVs of various sizes and shapes can fly continuously for more than 24 hours and some of them can only fly for less than 30 minutes. Some UAVs have wings of several meters …

Atmospheric pollution is a growing problem, particularly in urban areas and in less developed countries.  With half the world has no access to clean fuels or technologies (e.g. stoves, lamps), the very air we breathe is growing dangerously polluted. More than 8 million people around the world die each year …

Spider silk is also known as gossamer. It is a sought-after biomaterial. Spider silk is a protein fiber made in the glands of a spider. This silk is flexible and lightweight. These fibers are waterproof and have a tensile strength similar to that of steel. These fibers can be stretched …