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Synopsis

With the increased precision of different types of cosmological measurements, certain tensions emerged between some of the datasets when interpreted within the standard Lambda Cold Dark Matter (LCDM) model. Most notable of them is the Hubble Tension, referring to the 5-sigma disagreement between the value of the Hubble constant predicted by the LCDM fit to cosmic microwave background (CMB) measurements and its direct determination from Cepheid-calibrated Type IA supernova. I will review the observational evidence for the tensions and some of the theoretical proposals aimed at solving them.