RELEASING NITRATESBIOGRAPHY: LOUIS PASTEUR French, 1822-1895FIND OUT MOREBacteria are monerans, the simplest single-celled organisms. They are the smallest of all cells, visible only through…
CLOUDS AMONG THE STARSLIFE CYCLE OF STARSFIND OUT MOREThe spaces between the stars are not completely empty, but are filled with clouds of gas and dust called nebulas. We can see nebulas when…
EQUATORIAL FORESTCLIMATE ZONESHEAT FROM THE SUNMOUNTAIN CLIMATESCOASTAL CLIMATESSEASONSFIND OUT MOREEvery part of Earth has its own climate – the typical pattern of weather over a long period…
RUNNING GAZELLEGLIDERJET PROPULSIONFLYINGMUSCLESSKELETONFIND OUT MOREAll animals are mobile for at least some part of their lives because they need to find food. Most movement is controlled by…
ON THE ALERTTOUCH-SENSITIVE FEELERSVISIONHEARINGSMELLFIND OUT MORETo find food, mate, avoid danger, and communicate, animals rely on information gathered by their senses. Information is…
WOODY TISSUEFORESTSEVERGREEN TREESDECIDUOUS TREESFIND OUT MOREThese tall, seed-producing plants live for many years and do not die in winter. Trees have a single woody stem, called a trunk,…
IN TRAININGON THE MENUEVASPACE MEDICINEFIND OUT MORESince Yuri Gagarin became the first spaceman in 1961, hundreds of space travellers, or astronauts (called cosmonauts if Russian), have…
HOWLING WOLVESFEARSUBMISSIONEXCITEMENTBIG FIN REEF SQUIDBOTTLE-NOSED DOLPHINSSCENTED MESSAGEBIOGRAPHY: JANE GOODALL British, 1934-LANGUAGEFIND OUT MORESounds, signals, and gestures make up an…
ICE SHEETSFIND OUT MOREAbout one-tenth of Earth’s dry land and one-eighth of its oceans are covered with ice. This ice is made of snow that collects and becomes compacted (pressed down).…
HOW SATELLITES WORKSATELLITE COMMUNICATIONSORBITSFIND OUT MOREAn object that circles another in space is called its satellite. Earth has one natural satellite, the Moon, but a swarm of…
