Catastrophically

Since the early 1990s, mainly due to the decreasing seasonal sea ice in the Bellinghausen Sea, the population of the native Adélie penguin has catastrophically declined.

Source: tatoeba (5354724)

Humanity has reached a dead end; it is catastrophically rolling into the abyss; there is nothing ahead but madness and darkness, a return to primitive barbarism — such is the perspective painted by bourgeois mortals.

Source: tatoeba (10636498)