Reull Vallis: A river ran through it

(Phys.org)—ESA's Mars Express imaged the striking upper part of the Reull Vallis region of Mars with its high-resolution stereo camera last year.

Salmon runs boom, go bust over centuries

Salmon runs are notoriously variable: strong one year, and weak the next. New research shows that the same may be true from one century to the next.

Birds 'flap run' instead if flying over obstacles to save energy

Why don't you ever see baby pigeons? For the same reason you don't see many chicks: they can't fly. It can take months for their partially developed wings and flight muscles to become airworthy, and by then the youngsters ...

High Arctic avian athlete gives lessons about animal welfare

Researchers report that an arctic relative of the grouse has evolved to cope with its extreme environment by moving efficiently at high speeds or when carrying winter weight. This discovery is of relevance to welfare in the ...

Digital Baseball: Baseball stats go to the next level

Baseball fans who revel in the statistics surrounding the game, such as batting averages or the clocked speeds of curve balls, have gotten a windfall of data in the past few years thanks to multi-camera filming of games and ...

Human running speed of 35-40 mph may be biologically possible

(PhysOrg.com) -- Jamaican sprinter Usain Bolt's record-setting performances have unleashed a wave of interest in the ultimate limits to human running speed. A new study published Jan. 21 in the Journal of Applied Physiology ...

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