Planet Earth

Mother Earth, Gaia, the third rock from the Sun - whatever you call it, this 4.5 billion-year-old planet is the one that we and all known living creatures call home.

The Harlequin frog was widespread in Costa Rica and Panama until an introduced fungus from Asia decimated its populations, scientists say © Gerardo Ceballos/University of Mexico/PA

Extinction of land-based vertebrate species risks ‘catastrophic ecosystem collapse’

‘Turn off the tap’ on all ocean pollutants, says report © Getty Images

‘Turn off the tap’ on all ocean pollutants, not just plastic, says report

Rapid Ice Age retreat of Antarctic ice gives stark climate change warning © Getty Images

Rapid Ice Age retreat of Antarctic ice gives stark climate change warning

Danish seismologist Inge Lehmann, shown in 1932 © The Royal Library, National Library of Denmark, and University of Copenhagen University Library

Inge Lehmann The Danish scientist who discovered Earth has a solid inner core

Earth core structure. Elements of this 3d image furnished by NASA

Earth's core What lies at the centre and how do we know?

Christiana Figueres and Tom Rivett-Carnac: Has climate change determined our future? © Getty Images

Christiana Figueres and Tom Rivett-Carnac Has climate change determined our future?

Global temperature rise must be kept under 2°C to protect tropical forests © Dr Lindsay F. Banin / PA

Global temperature rise must be kept under 2°C to protect tropical forests

The dirty truth about eating green © Tom Straw

The dirty truth about eating green

Mycorrhizal networks: what exactly is the wood-wide web? © Tidy Designs

The wood-wide web Can trees and plants really talk to each other?

Tim Peake's space seeds grow slower when back on planet Earth (Timothy Peake with space seeds on the ISS © ESA/Nasa)

Tim Peake’s space seeds grew slower back on planet Earth

Fossil footprints 'provide a tantalising snapshot of humankind’s earliest days' © William Harcourt-Smith/Lehman College

Fossil footprints ‘provide a tantalising snapshot of humankind’s earliest days’

Cold War atomic bomb tests made the UK rainier © Getty Images

Cold War atomic bomb tests made the UK rainier

Ancient humans arrived in Europe 'far earlier than previously thought' © Tsenka Tsanova, License: CC-BY-SA 2.0

Ancient humans arrived in Europe ‘far earlier than previously thought’

Fast fashion needs to slow down, scientists warn © Getty Images

Fast fashion needs to slow down, scientists warn

Toby Ord: What are the odds civilisation will survive the century? © Getty Images

Toby Ord What are the odds civilisation will survive the century?