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Donald M. MacMillan, 49, Professor of Anthropology at Bowdoin College, is experiencing his ninth polar expedition. He was on Peary's Expedition (1908-09) when the latter discovered the North Pole. For two years he did ethnological work among the Esquimaux. He has been the leader of the Crocker Land Expedition (1913-17) and the Baffin Land Expedition...

Author: /time Magazine | Title: Science: Home from the Snow | 9/8/1924 | See Source »

...probably less than one-seventh the density of that of the earth. Because of its smaller mass, its gravity is much less and objects on its surface weigh only about one-third as much as the same objects would on the surface of the earth. It has also distinct polar caps, which increase and decrease with seasonable variations. It has also no marked clouds in its atmosphere. It has no surface elevations probably not over 2,000 or 3,000 feet in altitude. It has no oceans. Its year or period of revolution is close to 687 days...

Author: /time Magazine | Title: Science: A Close Look | 8/25/1924 | See Source »

...canals. Some of these are doubted as optical illusions. These supposed canals were estimated at 30 to 100 miles in width and Prof. Lowell believed them to be belts of irrigated country close to canals. He believed further that they were supplied with water by the melting of the polar caps, and thought he dectected changes in the darkness and color of the canals indicating the coming and going of the water and its effect on vegetation. The whole supposition that there is animal life on Mars rests on the fact that the alleged canals are absolutely straight, running along...

Author: /time Magazine | Title: Science: A Close Look | 8/25/1924 | See Source »

Those who doubt the existence of life on Mars are skeptical of the existence of the canals which Prof. Lowell so carefully mapped, an'd they point out that the light atmosphere, the extremes of heat and cold, the comparative absence of water (even if the polar caps consist of snow-and it is suggested that they may be congealed carbon dioxide-it is estimated that there is less water on Mars than there is in one of the larger of the Great Lakes) make life such as we know it impossible. But like the argument for "life...

Author: /time Magazine | Title: Science: A Close Look | 8/25/1924 | See Source »

...from a normal of between 1.94 and 1.98 to 1.90 in the past two years. This has lowered the temperature of the open oceans all over the world about 4½ degrees F. If this heat loss should become only twice as great, it is estimated that the permanent polar ice cap would descend over the subarctic and upper temperate zones. Canada would, become almost uninhabitable. Climates everywhere are now upset. Drought is threatening in India and California. These changes in the solar constant appear to move in cycles of about three years. Whether they have any relation...

Author: /time Magazine | Title: Science: Splits and Spots | 6/16/1924 | See Source »

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