The next hop: can wallabies replace the lab rat?

Article Abstract:

The Australian wallaby is becoming the preferred laboratory animal choice of many developmental biologists since the wallaby's unique gestation enables easier access to the wallaby embryo. Scientists are able to monitor the progress of embryonic development through the wallaby embryo, which is contained in the pouch.

Marsupialia, Marsupials

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Gradients that organize embryo development

Article Abstract:

Embryonic development remained a mystery to scientists throughout much of history until the existence of morphogenetic gradients was theorized. How embryologists discovered the link between gradient activity and embryo development is described.

Morphogenesis

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Taking ballistics by storm: an electronic gun with no mechanical parts fires a million rounds per minute

Article Abstract:

A newly-developed multibarrel electronic gun, called Metal Storm, invented by Mike O'Dwyer, a former grocery wholesaler, fires at a rate equal to one million rounds per minute.

Innovations, Equipment and supplies, Firearms, Battlefields

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