Dr. Bryan N. Duncan is a deputy project scientist for the Aura Mission at NASA's Goddard Space Flight Center in Greenbelt, Maryland.



He recently presented the story of air quality in three cities: Beijing, Los Angeles...

This video explains the functions and production of two important hormones in the body: adrenaline and thyroxine. The video provides a clear explanation for how adrenaline is released in times of stress or fear, and how it prepares your...

This video explains the menstrual cycle, which is a series of changes that occur in a female's reproductive system every month, from puberty to menopause. The video discusses the different stages of the menstrual cycle, how it is...

Regulation of Purine Biosynthesis

Using new, high-resolution global satellite maps of air quality indicators, NASA scientists tracked air pollution trends over the last decade in various regions and 195 cities around the globe. The United States, Europe and Japan...

Clouds can tell us a lot about the weather. They are made up of tiny droplets or frozen crystals of water, and their different levels and appearances can indicate different weather conditions. From the high, icy cirrus clouds to the low,...

This Video Explains Marketing - Channel Conflict

In this video, we discuss how the respiratory system responds to changes in pCO2 and breathing imbalances such as hyperventilation and hypoventilation.

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This video discusses the physiological response to stress, including the activation of the sympathetic nervous system and the release of cortisol. It explores how these responses evolved to deal with primitive stressors and how they can...

Akka helps you to build scalable, resilient, and fault-tolerant distributed systems that can provide outstanding performance on local machines as well as over remote networks. Employing the actor model, it is possible to leverage...

Renowned taxonomy in the world of business and L&D.



Bloom's Taxonomy is a renowned model for gauging competence in the world of Learning & Development. It is quite important to understand the taxonomy in the world of...

Using measurements from NASA's Aura satellite, scientists studied chlorine within the Antarctic ozone hole over the last several years, watching as the amount slowly decreased. This is the first definitive evidence of the success of the...

RAF 100 Military generations - Polly Perkins

This is a video of various student projects, ranging from elevator systems to surgical robot arms. Each project faced unique challenges such as coding, sensor malfunctions, and motor strength. Despite these obstacles, the students were...

Lesson on Erythrocytosis: Causes, Signs and Symptoms and Treatments. Erythrocytosis is a condition of increased red blood cell mass indicated by increases in hemoglobin and hematocrit. Erythrocytosis is either relative or absolute....

Pandemic-related shutdowns have affected how people act, so scientists began monitoring how that’s affected the planet — specifically nitrogen dioxide emissions. How do COVID-19 pollution patterns play into NASA computer...

The aim of this video is to explore how to create an outline.
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This clip is from the chapter "Excel 2019 Beginners: Outlining and Subtotaling" of the series "The Complete Excel Guide: Beginners to Advanced".In this section,...

The COVID-19-related lockdowns granted scientists an unexpected and detailed glimpse as to how human activities impact atmospheric composition. Two recent studies, one focusing on nitrogen oxide and the other...

NASA-funded scientists have traced the origins of mysterious pockets of high ozone concentrations and low water vapor in the air above the western Pacific Ocean near Guam to fires burning in Southeast Asia and in Africa, half a...

In this video, we will cover Azure replication strategy-theory.
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This clip is from the chapter "Azure 104 Certification - 2021 Updates" of the series "AZ-104: Microsoft Azure Administrator Full Course".In this section, we...

This video illustrates the different type of AWS certifications offered and explains which type is best for you.
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This clip is from the chapter "Exam Tips and Tricks" of the series "AWS Solutions Architect Associate...

In this tutorial, the instructor guides viewers through the process of creating a platform game using Scratch. They demonstrate how to design and customize a platform Sprite, set up borders to define the game area, and create a basic...

In this video, I show a method to learn the nerves and nerve root levels of the sacral plexus, which can help you “brain dump” the material on an exam.