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Optimal Foraging00:48

Optimal Foraging

How animals obtain and eat their food is called foraging behavior. Foraging can include searching for plants and hunting for prey and depends on the species and environment.
Self-Schemas02:16

Self-Schemas

In general, a schema is a mental construct consisting of a cluster or collection of related concepts (Bartlett, 1932). There are many different types of schemata, and they all have one thing in common: schemata are a method of organizing information that allows the brain to work more efficiently. When a schema is activated, the brain makes immediate assumptions about the person or object being observed.
Sulfur Assimilation01:20

Sulfur Assimilation

Sulfur is an essential element in biological systems, contributing to synthesizing key biomolecules, including amino acids such as cysteine and methionine, and cofactors such as coenzyme A and biotin. Microorganisms primarily assimilate sulfur as sulfate (SO₄²⁻) from the environment, which must undergo a series of biochemical transformations before it can be incorporated into cellular components. As sulfate is highly oxidized, it must undergo assimilatory sulfate reduction to become...
Naturalistic Observations02:30

Naturalistic Observations

If you want to understand how behavior occurs, one of the best ways to gain information is to simply observe the behavior in its natural context. However, people might change their behavior in unexpected ways if they know they are being observed. How do researchers obtain accurate information when people tend to hide their natural behavior? As an example, imagine that your professor asks everyone in your class to raise their hand if they always wash their hands after using the restroom. Chances...
Conditions on Early Earth02:06

Conditions on Early Earth

Around 4 billion years ago, oceans began to condense on earth while volcanic eruptions released nitrogen, carbon dioxide, methane, ammonia, and hydrogen into the primordial atmosphere. However, organisms with the characteristics of life were not initially present on earth. Scientists have used experimentation to determine how organisms evolved that could grow, reproduce, and maintain an internal environment.
Conditions on Early Earth02:06

Conditions on Early Earth

Around 4 billion years ago, oceans began to condense on earth while volcanic eruptions released nitrogen, carbon dioxide, methane, ammonia, and hydrogen into the primordial atmosphere. However, organisms with the characteristics of life were not initially present on earth. Scientists have used experimentation to determine how organisms evolved that could grow, reproduce, and maintain an internal environment.

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Related Experiment Video

Updated: Jul 12, 2026

Building and Operating a Low-Cost Elevated Carbon Dioxide Growth Chamber to Evaluate Microgreen Physiology under Spaceflight-Relevant CO2 Levels
09:02

Building and Operating a Low-Cost Elevated Carbon Dioxide Growth Chamber to Evaluate Microgreen Physiology under Spaceflight-Relevant CO2 Levels

Published on: April 17, 2026

Alternative astronomy: experiment in self-sufficiency blossoms.

A L Hammond

    Science (New York, N.Y.)
    |September 23, 1977
    PubMed
    Summary

    Six astronomy graduate students created an independent, community-based observatory with advanced instruments. Their innovative research earned respect from leading astronomers, defying traditional academic paths.

    Area of Science:

    • Astronomy
    • Astrophysics
    • Observational Astronomy

    Background:

    • Meager postdoctoral job prospects in astronomy.
    • Traditional academic career paths can be limiting.
    • Desire for independent research opportunities.

    Purpose of the Study:

    • To establish an independent astronomical research community.
    • To build a superior, community-funded observatory.
    • To conduct ambitious astronomical research outside traditional institutions.

    Main Methods:

    • Forming a close-knit community of graduate students.
    • Pooling resources to construct a private observatory.
    • Integrating advanced electronic instrumentation into a custom telescope.
    • Conducting independent research without government grants.

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    Conducting Miller-Urey Experiments

    Published on: January 21, 2014

    Related Experiment Videos

    Last Updated: Jul 12, 2026

    Building and Operating a Low-Cost Elevated Carbon Dioxide Growth Chamber to Evaluate Microgreen Physiology under Spaceflight-Relevant CO2 Levels
    09:02

    Building and Operating a Low-Cost Elevated Carbon Dioxide Growth Chamber to Evaluate Microgreen Physiology under Spaceflight-Relevant CO2 Levels

    Published on: April 17, 2026

    Experimental Methods for Efficient Solar Hydrogen Production in Microgravity Environment
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    Experimental Methods for Efficient Solar Hydrogen Production in Microgravity Environment

    Published on: December 3, 2019

    Conducting Miller-Urey Experiments
    11:10

    Conducting Miller-Urey Experiments

    Published on: January 21, 2014

    Main Results:

    • Successful construction of an advanced observatory.
    • Development of a superior telescope exceeding university standards.
    • Conducting significant astronomical research.
    • Gaining recognition and respect from prominent astronomers.

    Conclusions:

    • Independent, community-driven research is viable and can achieve high impact.
    • Innovative approaches can overcome traditional career barriers in science.
    • Advanced instrumentation can be developed outside established institutions.