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A discussion arises from the recent review article in Chemical Geology, where Tais W. Dahl and Susanne Arens concluded that land plants did not forever increase the physical weathering rates of the continental crust. This conclusion was reached from the records of preserved sediment rock volume and the timing of plant-assisted weathering as recorded in … Read More

The Carlsberg Foundation is sponsoring field work led by Tais W. Dahl to Arctic Siberia, where an important climate catastrophe is recorded in marine sedimentary rocks. The expedition will bring back data and samples deposited in the oceans during a climate event that caused sulfidic anoxia to suddenly expand in warming oceans and wipe out … Read More

In a brief story published in Danish on Videnskab.dk, Aske L. Sørensen and Tais W. Dahl explain one of the consequences of their latest EPSL paper: Earth was spinning faster 500 million years ago. The scientific paper entitled “Astronomically forced climate change in the Late Cambrian” documents Milankovitch-cycles in two drill cores through the Alum … Read More

The newly discovered ocean ventilation events in the 500 million year old Alum shale ocean is described in Danish on Forskerzonen: Videnskab.dk 

In an article published online in PNAS Tuesday Sep 10th, we have demonstrated how a combination of metal isotope analyses in marine sedimentary rocks can constrain the global scale feedbacks between atmospheric oxygen, seafloor oxygenation, and marine biological production. The relationship between O2 and animal life turns out to be more entangled than first thought. … Read More

The Niels Bohr Institute invites teachers to a conference called “Big Bang til Naturfag” (Big Bang to Science) to learn more about the history of the universe, our planet and the evolution life.  On Aug 6, 2019 Tais W. Dahl is giving the talk entitled “Det tidligste liv” (The earliest life). Hereafter, Morten Allentoft from … Read More

Invited by Dr. Philipp Porada, Susanne and Tais will be visiting to expand our model understanding on how early plants affected the composition of the atmosphere and oceans. Thursday at 14:00, Tais will give a lecture entitled: “Evidence for the Great Mid-Paleozoic Transition linked to the colonizations of land” at Potsdam Institute for Climate Impact … Read More

https://twitter.com/earthtime4567?lang=da May 8, 2018. By invitation from Prof. Jitao Chen, Tais will be giving a lecture at Nanjing Institute of Paleontological Sciences on the Atmosphere-ocean oxygenation and productivity dynamics during the Cambrian explosion of animal life. May 10, 2019. Invited by Prof. Shuzhong Shen, Tais will be speaking at Nanjing University on the Great Mid-Paleozoic Transition [...]

Geoengineering is one the key climate mitigation strategies, and even though humanity will need to cut down greenhouse hase emissions, several geoengineering mitigation strategies may develop into billion dollar businesses in the coming decades… Tais W. Dahl will be lecturing at this year’s Climate-KIC PhD course in Copenhagen on Friday July 5th.