Dr. Algae talks about the importance of staying on a daily schedule to remain healthy. He creates a daily schedule for eating, sleeping, and healthy activities, and encourages your student to do the same.

The most likely explanation for feeling tired all day but wired at night is that your Circadian rhythm is disrupted. This can be caused by a number of factors, such as adrenal disorders, poor sleep habits, sleep disorders, or mental vs....

Dr. Brian Crucian, a biological studies and immunology expert, discusses the hazard of hostile and closed environments in space. Crucian serves as the principal investigator for a NASA functional immune study. This is part five of the...

This program addresses many of the cycles conducted by animals including those of migration, hibernation, and patterns relating to day and night. The cycles that affect all living things are discussed including the air we breathe and the...

Sleep is central to our physical and mental health, but people have far less shut-eye today than they did a century ago. What is the impact?

A conversation with Sharmila Bhattacharya, senior scientist in the Space Biosciences Research branch at NASA's Ames Research Center in Silicon Valley.

This video provides an in-depth look at the pineal gland, including its location and function in the brain. It debunks some of the popular claims and speculations surrounding the gland, while also exploring its connection to the body's...

This video provides an in-depth lesson on the thalamus and the hypothalamus, two vital structures in the nervous system. Through detailed explanations and examples, the video highlights the critical functions of these brain regions in...

A conversation with Dr. Erin Flynn-Evans, Research Psychologist and the Director of the Fatigue Countermeasures Laboratory at NASA’s Ames Research Center in Silicon Valley.

In this video, we first explore the basic statistics of and concepts regarding sleep paralysis. Then, we dive into the physiological mechanism that causes it.

Young sunflowers face the sun when it rises in the east and then track its motion in the sky throughout the day till it sets in the west in the evening. The process repeats the next day, as sunflowers return to their ‘starting’ position,...

This video tutorial provides an overview of the adrenal gland (topography, parts, vascular supply, histology, hormones, etc..). 0:00. Introduction 0:22. Adrenal gland topography 2:06. Adrenal cortex and medulla 2:32. Vascular supply...

Lesson on African Trypanosomiasis (African Sleeping Sickness): Causes, Symptoms and Treatment. African Trypanosomiasis is caused by parasitic protozoa from the genus trypanosoma. Trypanosoma protozoa are carried in the tsetse fly, and...

Main organs of the endocrine system.

Everything from the mysterious phenomenon of "early morning" heart attacks in humans -- to how tiny nocturnal mammals evade predators -- to the blooming of plants -- is regulated by an organism's internal "biological clock." With...

Changes in sunlight can upset our circadian rhythms — and disrupt our moods. A clinical psychologist explains how seasonal affective disorder can still happen in the summer.

Many Canadian provinces and several U.S. states are considering getting rid of seasonal time changes and experts say sticking to standard time is better for natural sleep patterns.

U.S. President Donald Trump wants to scrap Daylight Saving Time for economic reasons and several Canadian provinces say they’ll follow suit if he does. Some experts also support doing away with DST, saying it’s better for natural sleep...

Seasonal affective disorder can make you feel tired, anti-social and hopeless. Here are the signs to look for and some ways to fight it.

Kansas Sunflower on a white background. HD 180

A yellow lone flower with a green bachground

The Kansas State Flower is the Sunflower. Beautiful transition video. HD 1080

A wasp on a yellow flower

Dozing off to late-night TV or sleeping with other lights on may mix up your metabolism and lead to weight gain and even obesity, a provocative but preliminary U.S. research suggests.