Posted on by Mark Thompson

Planets Without Plate Tectonics Could Still Be Habitable

Jupiter's Moon io

It has been thought that the existence of plate tectonics has been a significant factor in the shaping of our planet and the evolution of life. Mars and Venus don’t experience such movements of crustal plates but then the differences between the worlds is evident. The exploration of exoplanets too finds many varied environments. Many of these new alien worlds seem to have significant internal heating and so lack plate movements too. Instead a new study reveals that these ‘Ignan Earths’ are more likely to have heat pipes that channel magma to she surface. The likely result is a surface temperature similar to Earth in its hottest period when liquid water started forming. 

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Posted on by Laurence Tognetti

In 250 Million Years, a Single Supercontinent will Form, Wiping Out Nearly all Mammals

Figure 1 from the study displaying the warmest month average temperature (degrees Celsius) for Earth and the hypothesized supercontinent, Pangea Ultima, 250 million years from now, which the researchers hypothesize would make life for most mammals extremely difficult. (Credit: University of Bristol)

A recent study published in Nature Geoscience uses supercomputer climate models to examine how a supercontinent, dubbed Pangea Ultima (also called Pangea Proxima), that will form 250 million years from now will result in extreme temperatures, making this new supercontinent uninhabitable for life, specifically mammals. This study was conducted by an international team of researchers led by the University of Bristol and holds the potential to help scientists better understand how Earth’s climate could change in the distant future from natural processes, as opposed to climate change.

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