Nature is out to kill everything so a newborn animal must learn to walk on its legs as fast as possible to avoid predators. Learning the precise coordination of leg muscles and tendons takes some time and initially baby animals rely heavily on hard-wired spinal cord reflexes. More advanced and precise muscle control lead to the nervous system becoming well adapted to the young animal’s leg muscles and tendons.

No more uncontrolled stumbling – the young animal can now keep up with the adults.

Hangry, a portmanteau of hungry and angry, is widely used in everyday language but the phenomenon has not been widely explored by science outside of laboratory environments. You have probably seen it in television commercials, where someone is irritable, complains a lot, or fatigued until they get a candy bar, when they revert back to themselves.

A new survey finds it is not just clever marketing. 

The team recruited 64 adult participants from central Europe, who recorded their levels of hunger and various measures of emotional wellbeing over a 21-day period.

Why do most people eat dessert after dinner but not before? Culture, or the brain? 

The prevailing belief is that the body often needs protein so only after that is obtained are carbohydrates 'craved', to add to the body’s fat stores. Yet it is not so simple and a new study combines effects to see how the brain's parallel internal states guide behavior.

We all know people who have poor impulse control. They can't open a bag of chips without eating the whole thing, or they lose their temper over something minor and can't calm down. A new study finds it may involve two major circuits in the basal ganglia. 

Eukaryogenesis is the point at which animal and plant cells separate from bacteria. In animal and plant cells, tubulin forms microtubules which are critical to their internal organization, because they support the cell, giving it structure, shape, and internal organization.

Because it is so essential to the cell, uncovering the origin of tubulin would be a remarkable step in understanding how the complex cells found in animals and plants diverged from the single cells of bacteria.

A saying in psychology goes that more truth comes out when people are drunk. This is even when it comes to politics, where studies showed that young people who espouse more liberal beliefs get more conservative when they are inebriated. They stop saying what they think they should be saying based on what people want to hear.

Along that line, a wealthy person who was raised poor is more likely to see through excuses of poor people than someone born into money, according to a new paper. They are less 'sympathetic' than people who have never had to struggle.