Natural environment

The natural environment encompasses all living and non-living things occurring naturally, meaning in this case not artificial.

Steady-state economy

A steady-state economy is an economy made up of a constant stock of physical wealth (capital) and a constant population size.

Global issue

Informally, a global issue is any issue that adversely affects the global community and environment, including possibly in a catastrophic way, including environmental…

List of extinction events

Ethics of eating meat

In most societies the great majority of people eat meat when they can get it, but increasing controversy and debate has arisen over the ethics of eating animals.

Environmental vegetarianism

Environmental vegetarianism is the practice of vegetarianism or eating a plant-based diet based on the indications that animal-based industries are environmentally…

Global warming

Global warming, also referred to as climate change, is the observed century-scale rise in the average temperature of the Earth's climate system and its related effects.

William J. Ripple

Ripple heads the Trophic Cascades Program at Oregon State University, which carries out several research initiatives such as the Aspen Project, the Wolves in Nature…

Defaunation

Defaunation is the loss of animals from ecological communities. The growth of the human population, combined with advances in harvesting technologies, has led to more…

Human impact on the environment

Human impact on the environment or anthropogenic impact on the environment includes impacts on biophysical environments, biodiversity, and other resources.

Human impact on the environment

Human impact on the environment or anthropogenic impact on the environment includes impacts on biophysical environments, biodiversity, and other resources.

Human impact on the environment

The term anthropogenic designates an effect or object resulting from human activity.

Meat

Meat is animal flesh that is eaten as food. Humans have hunted and killed animals for meat since prehistoric times.

Biodiversity

Biodiversity generally refers to the variety and variability of life on Earth. According to the United Nations Environment Programme (UNEP), biodiversity typically…

World population

In demographics, the world population is the total number of humans currently living, and was estimated to have reached 7.62 billion as of May 2018.

Anthropocene

The Anthropocene is a proposed epoch dating from the commencement of significant human impact on the Earth's geology and ecosystems, including, but not limited to…

Extinction

In biology, extinction is the termination of an organism or of a group of organisms (taxon), normally a species.

Veganism

Matthew Cole, "Veganism", in Margaret Puskar-Pasewicz (ed.), Cultural Encyclopedia of Vegetarianism, ABC-Clio, 2010 (239–241),

Holocene extinction

The Holocene extinction, otherwise referred to as the sixth extinction or Anthropocene extinction, is the ongoing extinction event of species during the present Holocene…

Human overpopulation

Human overpopulation (or population overshoot) occurs when the ecological footprint of a human population in a specific geographical location exceeds the carrying…

Environmental impact of meat production

The environmental impact of meat production varies because of the wide variety of agricultural practices employed around the world.

Global catastrophic risk

A global catastrophic risk is a hypothetical future event which could damage human well-being on a global scale, even crippling or destroying modern civilization.