Entries Tagged 'Natural History' ↓

Tracking Alfred Russel Wallace in Sarawak, Borneo

I found all Alfred Russel Wallace’s writings online. Not only all the original works by Wallace are available there; the webmaster, Charles H. Smith, includes some summaries and comments that help understand the texts.

sundaland subduction and collision zones

Wallace’s wrote that a traveller in the Malay Archipielago finds himself sailing for days or even for weeks along the shores of one of these great islands, often so great that the inhabitants believe it to be a boundless continent.
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Wind highways: from Macquarie Island to Tierra de Fuego

I am stunned by the work “Wind as a Long-Distance Dispersal Vehicle in the Southern Hemisphere” published at Science. It provides empirical evidence of a hypothesis from mid-19th century that postulated that the wind is an efficient agent of dispersion of plants in long distances, even more so than spatial vicinity, for many plants.

stereographic map wind southern hemisphere

Source: Science

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Geographic North Pole and North Magnetic Pole

Not that it will change my life for ever, but I happened to wonder how far away the Geographic North Pole and the Magnetic North Pole are from each other.

North Poles: Geographic and Magnetic poles

I used Google Earth to get an approximation of the distance. I used the ruler (menu Tools > Ruler in the version 4.2.0198.2451 (beta) of Google Earth).

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Charles Darwin Online


The Complete Work of Charles Darwin Online

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