Whenever we think about Hydrogen flight it reminds us of the terrible crash of German passenger airship Hindenburg in 1937.  Hydrogen due to its high inflammable nature requires ultra-strong and big tanks to store it. But a team of young scientists from Imperial College in London has developed a drone that can carry a lightweight cylinder that stores the hydrogen for flight. The cylinder is prepared from aluminum and hydrogen inside the cylinder would remain in the solid-state. The hydrogen-powered drone can carry heavier loads and fly further than a battery-powered drone. Scientists hoping that the hydrogen flights could be the future of airways and could be used to deliver medicine and relief aid in disaster-affected areas.