The Cosmological Constant Lambda, in different incarnations, has been with us since Einstein’s 1917 paper.

Many cosmological surveys are underway, indicating so far that  the data are consistent with a dark energy equation of state of w=-1, i.e. a  Lambda term in Einstein's equation, although time variation of w is not yet ruled out. 
The talk will present new results from the Dark Energy Survey, from Cosmology to follow ups of LIGO Gravitational Wave events, and the landscape of future wide-field surveys.