This category is for alien creatures reported in UFO conspiracy theories and urban legends, which are claimed by people who share these narratives to exist in real life.

What is an alien species? An alien species is any non-native plant, animal or other organism introduced into a place that was never part of its natural range. Sometimes known as invasive, …

May 19, 2021 · Invasive alien species are plants, animals, pathogens and other organisms that are non-native to an ecosystem, and which may cause economic or environmental harm or …

Invasive Alien Species (IAS) are amongst the most significant drivers of species extinction and ecosystem degradation, causing negative impacts on ecosystem services and human well-being.

Alien species: a species moved by human activities beyond the limits of its native geographic range into an area in which it does not naturally occur. The movement allows the species to …

Nov 6, 2024 · Invasive alien species (IAS) are one of the most serious threats to global biodiversity and one of the leading causes of federal protection required for native species …

In conducting the assessment, experts assessed the current status and trends of invasive alien species, their impacts, their drivers, their management, and policy options to address the …

Nov 1, 2023 · Invasive alien species threaten livelihoods, water and food security, economies, and human health. For example, infectious zoonotic diseases such as dengue fever, Chikungunya, …

Alien species (as opposed to native species) are those whose presence in a region is attributable to human actions, deliberate or inadvertent, that enabled them to overcome biogeographical …

Oct 6, 2023 · Of the more than 37 000 alien species that have been introduced through various human activities, more than 3500 of these are harmful invasives. Approximately 200 new alien …

Sep 4, 2023 · The report reveals the global threat, impacts, drivers, and management of invasive alien species, which are one of the major drivers of biodiversity loss. It provides policy options …

Nov 29, 2024 · Invasive alien species are a main driver of biodiversity loss across the world, they have severe negative impacts on biodiversity, health and economic activities.

2 days ago · Even without the risk of drowning, Veryovkina Cave feels alien in every possible way. The moment you descend beyond the reach of surface light, you enter a realm of total …

Jan 22, 2025 · The latest three Alien movies (Prometheus, Alien: Covenant, and Alien: Romulus) have expanded the scope of the xenomorphs’ storyline. Those films introduced “the black …

Dec 13, 2024 · The evolution of life on Earth has progressed over billions of years from single-celled organisms to large animals and other species, including humans. Evolution vs Natural …

Feb 6, 2025 · Moving microbes. The results showed thatL-serine worked as an attractor for all three species. “Especially the usage of H. volcanii broadens the scope of potential life forms …

Invasive alien species are animals, plants, fungi and microorganisms entered and established in the environment from outside of their natural habitat. They reproduce rapidly, out-compete …

Feb 24, 2024 · Alien-looking lobsters, sponges, urchins, sea stars and sea lilies are among the creatures deep-sea explorers found off the coast of Chile. ... “Only two species were …