Scientists call for ethical debate before Mars terraforming

A team of Dutch, French and U.S. planetary scientists and ethicists warned in an Eos opinion article that terraforming Mars could irreversibly destroy scientific evidence of the planet's history and possible extraterrestrial life. They urge ethical debate before the planet is fully explored.

• The opinion article was published in Eos
• Authors are scientists from the Netherlands, France and the U.S.
• Terraforming could erase records of Mars' past
• They call for ethical debate before any changes