BP announced Tuesday that it tumbled into a massive $20.3-billion (16.8-billion- euro) net loss last year, despite a slender profit in the fourth quarter, as the coronavirus pandemic ravaged global energy demand. The enormous loss contrasted sharply with net profit of $4.0 billion in 2019, the British energy major said, adding that oil sector had been "hit hard" by the Covid-19 crisis. rfj/bmm