Keystone species are those that help maintain the balance and survival of an ecosystem; without them, the ecosystem would drastically change, or it would completely disappear. As the name implies, these species are the keystone the ecosystem is based on; they are particularly important because, if they disappear, no other species can replace them. Keystone species are usually predators, but they might also include fungi and plants.

Over thousands of years, wildlife—plants and animals—formed their own unique ecosystems without any influence of outside forces until the Galapagos Islands underwent many changes, especially since the arrival of humans to the Islands. With the increase of the population, the demand for food also increased, causing an increase in fishing, poaching, hunting, in addition to an increase in the use of wood. 

For more than 180 years, scientists have studied this rich ecosystem and its species. Among all the scientists, the Galapagos Islands were of great importance to Charles Darwin; it was the place that gave him the main idea of evolution by natural selection.

Birds are on the move as annual migration is an integral part of the avian life-cycle. They fly tens of thousands of kilometers in search for more convenient ecological conditions, safer habitats, food, and mating grounds. 

Our ecosystems consist of armies of creatures; without their presence the whole ecosystem will collapse.

A clean environment is essential for human health and well-being, but pollution remains a major source of health risk throughout the world.

Diseases have come and gone, but others originated in animals have stayed; our relationship with nature is something that we need to examine.

Humans are taking Earth for granted to face the biggest environmental challenge our species has ever encountered; that is global warming.

We see our Red neighbor glowing in the sky, hoping it would be our safe refuge; this is how decision makers racing to study Mars think.

While we know that the amount of threatened biodiversity is aplenty, there are some success stories that give us hope and serve as a real evidence of what protecting biodiversity actually looks like.

Welcome to the "Land of Death" in the Bahariya Oasis; the most dangerous place during the Cretaceous period!

The loss of natural habitats is the main threat to 85% of all species listed on the International Union for Conservation of Nature (IUCN) Red List—a comprehensive information source on the extinction risk of animals, fungi, and plants.

Since human beings started using plastic, life has become so much easier; as a result, plastic has accumulated and flooded our world, unleashing a monster that is suffocating Earth.

Lack of fresh and healthy drinking water is a serious problem that is addressed through a number of methods, such as digging lakes or wells.

Scientists claim that the dream of resurrecting extinct animals may very likely come true. Will the woolly mammoth walk the Earth again?

One of the most precious resources that have been facing many challenges is the Benguela Marine Ecosystem, which runs along southwestern Africa and the coastline of Angola, Namibia, and South Africa.