Nipponaphis monzeni soldiers seal nest breaches

Aphid soldiers seal nest breaches with their bodies

In the aphid species Nipponaphis monzeni, young soldiers repair holes in their plant-made nest by rupturing their bodies and spreading body fluid over the gap. Cells in the fluid help it clot and seal the opening.

Korea's industrial north and agricultural south were divided after World War II

Under Japanese colonial rule, heavy industry and hydroelectric development became concentrated in northern Korea, while much agricultural production remained in the south. When the peninsula was divided after 1945, the new border cut across an economy whose regions had previously depended on each other. The division separated industrial capacity from major farming areas.

A caisson creates a dry place to work underwater

A caisson is a large hollow structure used for construction underwater. It can be lowered to the bottom of a river or other body of water and keep water away from the work area, allowing people to build things such as bridge supports.

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Nipponaphis monzeni soldiers seal nest breaches

Aphid soldiers seal nest breaches with their bodies

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