Human speech requires precisely organized body parts and biochemicals that are certainly complicated enough on their own to have warranted their special creation. But a new study indicates that gestures also play a key role in interpersonal interactions.

Are humans born to cheat? What do Americans think about marital infidelity? Those who oppose the practice of adultery often base their arguments on religious prohibitions. Others, confident that religion is worthless, or worse, turn to science to support their contentions that monogamy is not biologically “natural.”

Man-made geographical high points in southern England and Wales have been observed for centuries, including earthworks, stone monuments like Stonehenge, and hill camps. But something quite unexpected about their distribution may have been verified.

Evolutionary science repeatedly declares that chimps and humans are 98 percent genetically identical, which is then taken as solid evidence that mankind evolved from an apelike ancestor. But a former BBC producer’s new book has found reasons to emphasize research that is often overlooked by evolutionary advocates—scientific results that reveal the uniqueness of man.

Evolutionary history holds that the first humans emerged about 200,000 years ago. It was thought that these early people were in some ways sub-human, as the gradual development of higher-level thinking slowly separated them from their ape-like ancestors. But the archaeological find of an ancient crafted hand tool makes that assumption quite questionable.