the original “Blade Runner,” Ford’s Deckard was constantly soaked by rain, but in the new film, the weather is much less predictable. In the intervening years, the climate has gone berserk due to rampant pollution, turning Los Angeles into a chilly, desolate place. “As much as the first movie had an atmosphere of constant rain, in this one it would be colder,” the director says. “Basically, you could say that the first movie was made by a man from London, England, and the second one was made by someone from Montreal, Canada.”
Source

A:

In the very beginning where they give a brief textual exposition of the world it's stated that:

After the collapse of eco-systems in 2020's humanity was on a brink of
  a great famine, but Wallace's genetically engineeredUpdated: 3 killed in plane crash at LaGrange Callaway Airport

Steena Hymes shymes@civitasmedia.com

February 22, 2014

Three people were killed after a plane crashed at LaGrange Callaway Airport on Saturday.

Lt. Chris Taylor of LaGrange Fire Department said two male passengers were dead at the scene when fire and EMS officials arrived. A third male passenger was flown to Columbus Medical Center and died at the hospital.

LaGrange police have identified and released the names of the victims. The three men killed were: Vincent Rossetti, 60, of Peachtree City; Willy Lutz, 69, of Peachtree City; and Jeffery Curtis 53 of Peachtree City.

The 1980 Beech fixed-wing, multi-engine aircraft nosedived into the ground about 2:07 p.m., Taylor said, resulting in extensive damage. LaGrange and Troup County firefighters and local officials arrived on the scene immediately