Animals attacked by pandemic; others break out and run wild.
After three months: Kudzu vine spreads throughout south of America – required constant culling before. Kudzu covers power lines, goes over trees and houses. Nothing grows but kudzu.
Pigs in captivity break out eventually. Pigs eat anything, can survive in a variety of conditions. Farmyard pigs breed with feral pigs, gaining larger tusks and more hair. No rabies in Britain; in US, over 7000 animals a year caught rabies. Every year, oral bait vaccines were dropped for coyotes and raccoons. Domestic cats and dogs are affected. Carriers can bite up to another hundred animals.
After five years: ivy takes root in stadiums where it was planted. Buckthorn spreads in the mid-west US through bird droppings. After thirty years: Skyscraper window panes fall off.
Gold doesn’t dissolve or tarnish. Very non-reactive.
Dominant sound is bird song.
Tyres deflate in a few years. Paint flakes away. Rust eats body. 75 years after, most cars are bare metal structures. After 100 years, cars are rusty metal. 100 years after: Brooklyn bridge comes down; wires crack and break, first individual strands then several.
Cellulose-acetate film in storage warps and ripples in humid conditions in 100 years. Paper becomes moldy in humid conditions, breaking down in a hundred years.
Exceptions: books in the desert (really dry, arid conditions).
Cds last for a few centuries. 150 years after: underground passages now underground streams. Underground tunnels and subways begin to collapse. Streets above crack and fall in if there are tunnels underneath.
Cats (descendents of house cats) eat field mice and small birds in gardens/vines in tall buildings in certain cities. Possibility of flying cat (like flying squirrels)?
More fish and marine creatures 150 years later with less fishing and pollution. Fish population rose in north Atlantic in WW2 when trawlers avoided fishing there; similar ‘comeback’ could happen. In 1700s, a lot of whales, tuna, turtles.
Seagull numbers increase though beachside populations dropped when landfills disappear; after an initial decline, gulls eat more fish from ocean?
200 years after: iron and steel landmarks almost about to collapse. Eiffel tower corroded like bridge over Kenzua railway duct; connection points freeze and construction can’t absorb wind. Would fall over piece by piece.
Tip falls first.
Tower bridge in London falls. Space needle in Seattle falls, shaft crumbling.
Saturated soil in New York with increased sea levels means the empire state building will lean. Gravity acts against the structure, increasing stresses on base. Top of building collapses downwards on itself. Skyscrapers falling in coastal areas.
500 years after: concrete buildings last longest. Modern concrete higher water content than roman concrete (some roman buildings lasted over 2000 years) and is more loosely packed, with more air pockets and cracks. Below surface of reinforced concrete buildings is a mesh of steel reinforcing bars. These won’t corrode initially as concrete around them maintains an alkaline environment around them. Eventually this alkalinity will break down and the steel will rust and expand to three times original volume, cracking the surrounding concrete. After 50 years: cracking. After 100 years: flaking. After 500 years: most reinforced concrete structures gone.
1000 years after: cities unrecognizable. Very little evidence of buildings. Vegetation. Water flowing through former streets once roads break apart. Manhattan: buildings fall, soils form, trees grow out of them. New hills with trees where old buildings were.
10, 000 years after: very large stone structures such as wall of china recognizable in some form. Geyza pyramid covered by sand. Hoover dam still standing for thousands of years but earthquakes and sandstorms cause to fall. Mount Rushmore still around?
-- the larger the exposed surface area, the faster it will rust (iron powder will rust much faster than a solid block of iron
-- most iron alloys, such as steel, resist rusting more than pure iron does
-- painting or other treatments to the iron surface will prevent rusting to a large extent
-- exposure to the combination of salt (from the ocean or due to salting of icy roads) will greatly increase the rate of rusting
-- if the iron is not in contact with any oxygen, it cannot rust at all
-- the hotter the temperature, the faster it will rust