The world is becoming a more dangerous place for humans and snakes alike as climate change and human activity disrupt natural habitats. A recent study has found that the risk of snakebites is increasing globally due to the shifting ranges of venomous snakes, which are adapting to rising temperatures and human pressures. This trend is expected to worsen in the coming decades as snakes move to escape hotter conditions, potentially affecting billions of people.
The study, published in PLOS Neglected Tropical Diseases, mapped the distributions of all 508 medically important snake species across the planet to a granularity of 1 sq km. It then projected how rising temperatures would alter their overlap with human populations by 2050 and 2090. The findings reveal that most species will struggle due to hotter weather and habitat conversion, with some facing extinction. Others are likely to move, bringing venomous snakes into new areas where human populations are unfamiliar with the threat.
One of the authors, David Williams, warns that the overlap between humans and venomous snakes will increase, leading to more snakebites. He predicts that in 50 years, species will appear in new places, putting them into contact with people who have not been used to this problem before. This could result in encounters in farmyards, near water sources, playgrounds, or running tracks.
The study highlights the dangers in poor, remote areas where people work barefoot and have limited healthcare access. In contrast, wealthier countries with venomous snake species have lower mortality rates due to better protection and healthcare. The researchers emphasize the importance of using their predictions to target resources, prepare for changes, and focus conservation efforts for threatened snake species.
This study serves as a stark reminder of the interconnectedness of our world and the need to address climate change and human activity to ensure the safety and well-being of both humans and snakes.
