Environmental Science

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The Search for Alternative Energy

Alternative or renewable energy sources aren’t based on resources that are in limited supply on Earth; instead, they’re captured from processes (such as wind, waves, and sunshine) that are continually [more…]

Environmental Science: How to Create Fresh Water

Environmental scientists know that in some regions of the world, even practicing water conservation can’t meet all the freshwater needs of people and ecosystems. The Middle East, in particular, faces extreme [more…]

Environmental Science: How to Meet Human Water Needs

Environmental scientists discovered that the second largest consumer of fresh water is you (and every other person in the U.S.). Every day you drink water, brush your teeth, wash your clothes, flush the [more…]

Environmental Science: Agricultural Uses of Water

Agriculture, the growing of plants as food, is the largest consumer of fresh water on Earth, accounting for nearly 70 percent of all freshwater withdrawal. One of the biggest challenges of farming in some [more…]

Environmental Science: What is Shared Land?

In environmental science, the tragedy of the commonsscenario describes how all the people who have access to common areas or shared public space will use it to meet their current needs, thus allowing the [more…]

Environmental Science: How to Conserve Grasslands

Environmental science looks at how to conserve grasslands. Grasslands are an important ecosystem that people use (and sometimes abuse) for the resources they provide. Generally speaking, [more…]

Types of Environmental Science Experiments

In environmental science, experimental design is an extremely important part of the scientific method. When a scientist seeks to prove or disprove a hypothesis, he or she must carefully design the experiment [more…]

Environmental Science: What Is Ionic Bonding?

Understanding the basics of ionic bonding is important in environmental science because, although ionic bonds are strong, they’re easily broken in water. For atoms to construct matter large enough for [more…]

Environmental Science: What Is Covalent Bonding?

Understanding the basics of covalent bonding is important in environmental science. When two atoms join together in a covalent bond, they form a molecule that shares electrons. Unlike in the ionic bond [more…]

What Are Photosynthesis and Respiration?

Environmental scientists recognize that the fundamental source of energy for most life on earth is the sun. Through photosynthesis, plants capture the light and convert it into chemical potential energy [more…]

What Is a Steady State Ecosystem?

Some ecosystems exist in a steady state, or homeostasis. In steady-state systems, the amount of input and the amount of output are equal. In other words, any matter entering the system is equivalent to [more…]

What Is the Hydrologic Cycle?

The hydrologic cycle involves water moving from the surface (most importantly the oceans) to the atmosphere, across the land, and everywhere in between. Environmental scientists know that the hydrologic [more…]

Patterns of Ocean Circulation

Environmental scientists study ocean circulation because, along with patterns of air movement in the atmosphere, the movement of water through the oceans helps determine weather and climate conditions [more…]

How Biological Communities Work Together

Environmental scientists who study biological communities look at the number of organisms, the number of species, and the distribution of the plants and animals across the environments that they inhabit [more…]

The Dangers of Pesticides in the Environment

The use of pesticides in farming is an important issue to environmental scientists. Farmers encounter many different pests that can damage their crops, and each kind of pest requires different chemical [more…]

The Environmental Science of Sustainable Agriculture

Sustainable agriculture uses methods to produce food that don’t damage the environment or rely on toxic chemicals. Farmers and scientists have developed these methods because they produce food in ways [more…]

What is the Theory Evolution by Natural Selection?

The theory of evolution by natural selection explains how species evolve, or change through time — sometimes changing so much that new species are created. The variety you see in the living things all [more…]

The Environmental Science of Surface Mining

The environmental damage caused by surface mining is related to the large amount of surface material that humans remove during mining operations. The environmental effects of surface mining include [more…]

Petroleum and Natural Gas Resources

Here is the lowdown on these fuels and a couple of lesser-known petroleum-related resources, and what the possible ecological effects and advantages of extracting them are. [more…]

What Is the Environmental Impact of Mining and Burning Coal?

Mining and burning coal for fuel is harmful to the environment; but, because coal is so abundant and cheap, many people are reluctant to give it up as a fuel source. [more…]

What Is the Environmental Impact of Petroleum and Natural Gas?

What you know as oil is actually called petroleum or crude oil and may exist as a combination of liquid, gas, and sticky, tar-like substances. Oil and natural gas are cleaner fuels than coal, but they [more…]

Hydropower: Generate Energy with Rivers and Ocean Tides

An important source of alternative energy is hydropower: converting the flow of rivers and ocean waves and tides into electricity through dams and turbines. The best part about both of these water sources [more…]

What Are Passive and Active Solar Energy Systems?

Humans can capture solar energy directly from the sun through passive and active solar energy systems. Ancient people used passive solar energy systems by building their houses out of stone or clay, which [more…]

What Is Cogeneration? Energy Conservation in Power Plants

Cogeneration is a method of energy conservation that involves the production of two types of energy at a single power plant. The ugly truth is that human beings waste a lot of energy. Although some energy [more…]

What Causes the Hole in the Ozone Layer?

Air pollution has the ability to affect the earth’s entire ecosystem, as environmental scientists realized when they found direct links between ozone layer destruction and manmade pollutants called CFCs [more…]


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