Most scientific estimates, however, say that geomagnetic reversals take between 1,000 and 10,000 years to complete, and do not start on any particular date.

By the latest scientific estimate, insects and spiders make up 99 percent of all species on Earth.

Assume the exact scientific estimate of the consequences of the programs are as follows.

Without any modifications, the formula consistently produces results that match scientific estimates.

Some religions raised the question of its age: the Hindu religion got closest to the present-day scientific estimate.

According to the best available scientific estimates, 99.9 percent of carcinogens in the diet come from natural sources.

Current emissions pledges from both developed and developing countries represent only 60% of what is needed to stay below 2C, according to scientific estimates.

Some scientific estimates indicate that up to half of presently existing species may become extinct by 2100.

Prior to the use of radiometric dating, scientific estimates before 1900 ranged between 20 million and 3 billion years old.