The boundaries of tectonic plates can be seen on the seafloor.
The Hubble Space Telescope orbits outside the distorting influence of Earth´s atmosphere.
From the 1940s, the increasingly large aircraft carriers became the masters of the oceans.
Treated sewage water can be used in agriculture and industry.
Raw iron is produced from iron ore in iron smelters.
The Voyager space probes were the first man-made objects to leave the Solar System. They gather data about outer space and carry information about humanity.
The design and structure of modern houses play an important role in environmental protection.
A bireme is a type of ancient warship, with a characteristic pointed bow and two decks of oars, used by many armies.
The fat-tailed scorpion is one of the world's most dangerous scorpions.
One of the oxoacids of nitrogen. Colourless, moderate acid with a pungent odour, that exists only in aqueous solution.
A compound formed as white smoke during the combustion of phosphorus.
The Channel Tunnel is a 50.5 km long railway tunnel between the United Kingdom and France, beneath the English Channel.
The products of oil refining include diesel oil, petrol and lubricants.
Metals forming hexagonal metallic lattices are rigid and difficult to machine.
Venus is the 2nd planet from the Sun, the brightest object on the night sky (after the Moon).
Colourless, moderate acid, only known in aqueous solution.
The least tightly packed crystal structure.
The face-centred cubic metal lattice allows the closest fit of metal atoms.
This animation demonstrates instruments used to examine atmospheric phenomena.
Satellites orbiting the Earth can be used for civilian or military purposes.