[NEWS] Five sci-tech links: Precambrian fossils, CO2 and trees, mountains, Uranus and Neptune, Mars

[rfmcdonald]

• Have fossils of the movements of ancient animals 2.1 billion years ago been found? CBC reports.


• Increasing levels of atmospheric carbon dioxide, it turns out, will not accelerate tree growth. CBC reports.


• Motherboard reports that vast "mountains" may exist, hidden deep inside the molten interior of the Earth.


• Universe Today reports on Hubble observations of the atmospheres of outer-system ice giants Uranus and Neptune.


• Universe Today reports on the startling assertion of Elon Musk that, in the foreseeable future, a round-trip ticket to Mars might cost only $US 100 thousand.