Category Archives: Nature

Flora & Fauna related topics.

Why Humans Can’t Re-Grow Limbs (Yet)

Starfish can regrow lost arms, and salamanders can sprout new limbs. So why can’t we? Sci Show explains the science of regeneration, and explores the limitations the humans face — and are trying to go beyond.

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2014 – Still 20.000 Elephants hunted down!

In Afrika zijn vorig jaar 20.000 olifanten afgeslacht om hun ivoor. Dat schatten natuurbeschermers na de inbeslagname van slagtanden in verscheidene Afrikaanse landen. Voor het eerst is de ivoorhandel in Afrika groter dan die in Azië.

Vooral in Kenia, Tanzania en Uganda werden olifanten door stropers gedood. Internationale natuurorganisaties hebben daar eerder al bij de overheid aan de bel getrokken om iets tegen de olifantenstroperij te doen.

Het ivoor werd tijdens politieacties ontdekt in onder meer containers in de Keniaanse havenstad Mombasa. Ook in Uganda zat een grote partij slagtanden verstopt in containers.

We haven’t come very far, have we..

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Cut the Tree of Life

treeoflife

Back in 1837, Charles Darwin sketched out a tree of life in a notebook as a way to visualize his idea that different species share a common ancestor. Our DNA is an historical archive, storing a wealth of information about our kinship with the rest of life.

In the 1970s, the biologist Carl Woese attempted the first sketch of the tree of life–a tree including the biggest groups of species.

Today, three biologist offered an updated look at the evidence in Nature Reviews Microbiology. James McInerney, Mary O’Connell and Davide Pisani argue that the evidence in favor of the three-domain tree has been steadily diminishing, while the evidence for a merger has been gaining strength. But the full story of evolution appears to be a graph that doesn’t just split, but also joins together into rings and other shapes. It becomes harder to slice life up into neat groups when it keeps joining together. I hope some visionary artist comes up with a new way to look at life. [TheLoom]

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The Overview Effect – The Reappreciation of all life


The Overview Effect, first described by author Frank White in 1987, is an experience that transforms astronauts’ perspective of Earth and mankind’s place upon it. Common features of the experience are a feeling of awe for the planet, a profound understanding of the interconnection of all life, and a renewed sense of responsibility for taking care of the environment. ‘Overview’ is a short film that explores this phenomenon through interviews with five astronauts who have experienced the Overview Effect. The film also features important commentary on the wider implications of this new understanding for both our society, and our relationship to the environment.
The Planetary Collective made a short documentary about the Overview Effect.[VIA]

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