Earth Day is widely recognised as the largest secular observance in the world, marked by more than a billion people every year as a day of action to change human behaviour and provoke policy changes. This day recognises and celebrates the Earth and its ecosystems as our home and highlights the need to protect earth to enhance people’s livelihoods, counteract climate change, and stop the collapse of biodiversity. To raise awareness of Earth Day 2021, Elsevier presents a curated list of free access journal articles and book chapters in support of this year's theme - Restore our Earth.
In this work, the authors take on  a broad-scale quantitative assessment of butterfly biodiversity. They find with some examples of North American butterflies that shared biogeographic histories and trophic associations do not necessarily assure similar diversity outcomes.
In this article, we seek to draw upon a variety of multidisciplinary datasets that are yet to be compiled in a peer-reviewed publication, to support growing movements looking to re-cast the forests of the Wet Tropics as cultural landscapes as well as purely “primitive” Gondwanan remnants.
Global warming has been affecting animal husbandry and farming production worldwide via changes in organisms and their habitats.
Anthropogenic activity is a major driver of seabird injury and mortality in the 21st century.

Mangrove-dominated estuaries host a diverse microbial assemblage that facilitates nutrient and carbon conversions and could play a vital role in maintaining ecosystem health.

Schematic diagram showing Greenland's coastal environments.
Environments along the coast of Greenland are rapidly changing under the influence of a warming climate in the Arctic.
Material depletion over reliance of linear economies and environmental pollution may be resolved by applying the principles and practices of anthropogenic circularity science. Here we systematically review the emergence of anthropogenic circularity science in the interdisciplinary development of green chemistry, supply chain, and industrial ecology at different scales.
Elsevier,

Geography and Sustainability, Volume 2, March 2021

This article supports SDG 15 by demonstrating both climate change and social-economic developments play important roles to wildlife recovery in Qingzang Plateau. How to effectively promote the wildlife restoration and conservation in Qingzang Plateau is challenging.

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