Scientific American Magazine

They have evolved rapidly because of economic pressures to maintain commerce in icebound waters. They feature unusual hull designs and propulsion systems, and most of them are currently built in Finland

The solar system's most active volcanic world is a moon of Jupiter whose geyser like eruptions and massive lava flows yield evidence of exotic volcanic fluids. Their source of energy is gravitational

Excavations at a site in Bavaria unearth clues to an economy of 1000 to 800 B. C. in which farmers were just beginning to exchange their surplus for the work of specialized craftsmen

X-ray analysis of crystals of three types of double-helical DNA molecule leads to the realization that base-sequence information can be stored in the local structure of the helix

In a quantum-mechanical theory of gravitation the very geometry of space and time would be subject to continual fluctuations, and even the distinction between past and future might become blurred

On the island of Newfoundland, which has few species of mammals, lynxes preyed on snowshoe hares until the hare population "crashed." Then the lynxes switched to caribou calves, and the cycle continues

A bicycle and its rider are strongly impeded by their resistance to the Row of air. Aerodynamic stratagems have brought vehicles that can go 60 mlies per hour on a level road without assistance

The visual system apparently organizes ambiguous retinal images according to rules of inference that exploit certain regularities in the external world