Francis Halzen (University of Wisconsin-Madison) has won the Nobel Prize in Physics for decisive contributions to the IceCube Neutrino Observatory and the discovery of high-energy neutrinos of astrophysical origin. (Here is a link to the Nobel Prize official page.)
Francis has devoted his life to searching for the origin of high-energy neutrinos. He has been the persistent leader in building a large-scale detector under the South Pole, from the AMANDA experiment to the IceCube experiment. Drilling holes deeper than 2 km to build a 1-cubic-kilometre-scale detector under 1.45 km of South Pole ice and using the glacier sheet ice as the detector material was a daring feat, and it was possible through many people's hard work and devotion. Francis's scientific insight and kind leadership were decisive in helping the IceCube collaboration push forward with many discoveries.
IceCube finished its construction in 2011 and discovered high-energy neutrinos originating from outside the solar system in 2013. Since then, IceCube has made several breakthroughs in high-energy neutrino measurements, including evidence of neutrino emissions from astrophysical objects, evidence of tau neutrinos, and evidence of the Glashow resonance.
The entire IceCube collaboration rejoices and celebrates the moment together with Francis.
If you want to read more, here is the McDonald Institute's article on the prize, including comments from members of LEMMA.