Viruses could acquire thousands of new hosts as climate change causes increasing contact between different mammal species.Diseases such as Ebola virus are likely to spread further than ever before, while new pathogens could emerge with the potential to affect both animal and human populations. More than 15,000 instances of diseases crossing into new species could take place in the next 50 years as a result of climate change.As mammals shift their ranges to adjust to increasing temperatures, thousands of new species will come into contact for the first time.Even if climate change is limited to...