Do the Obese Know They Are Obese?

Do researchers know what they are doing?

Do animals know what they know ?

Using well-established paradigms for studying animal perception and memory, researchers have begun to ask whether animals can monitor the status of their knowledge in a behaviour al task whether they know what they know. Generally, such metacognitive ability is tested by giving animals the opportunity to avoid (or ‘escape’) a test of memory or perceptual discrimination. The pattern of escapes c...

Insect Migration: Do Migrant Moths Know Where They Are Heading?

Moth migration has been assumed to involve hitching a ride in favorable winds. A new study has shown that silver Y moths migrate only on nights when winds would displace them southward, implying that they detect their direction of movement while airborne, likely by a magnetic sense.

What the Bees Know and What They Do Not Know

I. Honeycombs. The honeycomb of the bees is a loose tissue of wax forming a plane layer. The first things on it which catch one's eye are the regular hexagonal patterns on both sides. The hexagons are the openings of prismatic vessels, called bee-cells. Kepler described the shape of the bee-cells more fully. It turned out that the bottom of a cell consists of three equal rhombi as shown in Figu...

Progenitor cells: What do they know and when do they know it?

In the cerebral cortex, cell-fate specification and migration depend on both extrinsic and intrinsic regulation, but recent studies raise the possibility that much of the information needed to generate distinct cell types and specific migratory patterns is intrinsic to progenitor cells at early stages of development.