Word: earths
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Dates: during 1930-1939
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...Martian terrain. But the dark patches on the planet's surface grow heavier and more distinct in winter, change from blue-green in summer to chocolate brown in winter. These changes strongly suggest vegetation. The potent chemical compound called chlorophyll is present in all the green plants of Earth, but spectroscopic analysis of the Martian patches has failed to disclose chlorophyll there. However, chlorophyll is simply the efficient catalyst which terrestrial plants have developed to enable them to store energy from sunlight, and Martian plants may have evolved a different...
Last week, as the shadow of war hung over Europe, the war planet, baleful red Mars, hung bright and big over the world. Astronomers were particularly interested in the red planet, for (in astronomical figures) Mars was very close to Earth and getting closer every minute. This week the space gap between Earth and Mars dwindles to 36,030,000 miles-the nearest approach in 15 years. Astronomers have been scanning and photographing Mars for weeks, this week will redouble their efforts. But to the old and battered question which still fascinates laymen-does intelligent life on Mars exist-astronomers...
...existence of animal life on Mars is anybody's guess. Mars is smaller, colder, drier than Earth, has a much thinner atmosphere. Adams and Dunham of Mt. Wilson have shown that the oxygen content of the Martian atmosphere must be less than 1% of the Earth's. Yet among different types of animal life on Earth there are enormous differences in the rate of oxygen intake, and it may be that animals on Mars have adapted themselves to the rare atmosphere by an ultra-slow rate of oxygen consumption. Such animals might be intelligent but they would also...
...telescope gets into action (perhaps next year). The giant instrument will show Mars larger but not much clearer, on account of atmospheric distortion. The light by which earthlings see Mars is reflected sunlight-and that means light which has passed twice through the Martian atmosphere and once through the Earth...
...offset motor gives greater traction to its left rear wheel which rolls on the unplowed land, not on the softer earth already plowed...