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Humans causing cancer in animals with a surge in plastic waste

LONDON May 23: Animals are developing cancer due to 'significant' changes in the environment caused by humans, scientists claim.  
Pollution in oceans, radiation from power plants and pesticides from farms may be causing wild animals to develop tumours, according to experts from Arizona State University.
Light pollution and animals eating human food from rubbish may also be driving the disease, they add.
Previous research suggests cancer affects all animal species, from facial tumours in Tasmanian devils to melanoma in wild fish. Dogs and even clams can also be affected by the disease. 
Researcher Tuul Sepp, from Arizona State University, said: 'We know that some viruses can cause cancer in humans by changing the environment that they live in - in their case, human cells - to make it more suitable for themselves. Basically, we are doing the same thing. 
'We are changing the environment to be more suitable for ourselves, while these changes are having a negative impact on many species on many different levels, including the probability of developing cancer.'
The researchers, writing in the journal Nature Ecology & Evolution, plan to test their theory by comparing cancer rates in animals living in human-inhabited areas with those in preserved environments.