From Do Jehovah’s Witnesses Believe in Creationism? on jw.org:
No. Jehovah’s Witnesses do believe that God created everything. But we do not agree with creationism. Why not? Because a number of creationist ideas actually conflict with the Bible. Consider the following two examples:
- Length of the six days of creation...the word “day” in the Bible can refer to a considerable length of time...
- Age of the earth...Jehovah’s Witnesses have no objection to credible scientific research that indicates the earth may be billions of years old.
Although Jehovah’s Witnesses believe in creation, we are not antiscience. We believe that true science and the Bible are compatible.
Any mention of evolution is absent (which IMO is a bit surprising, considering the FAQ being answered).
Similar to Earth's age, would Jehovah's Witnesses also have no objection to "credible scientific research that indicates" life, including humans, evolved from simpler forms?
Or do they have a different belief?