Did you know that greenhouse gasses were discovered by a woman?

The greenhouse effect was discovered by female activist and physicist Eunice NewtonFoote, according to New Scientist. Foote conducted an experiment where she tested the heating effect of sunlight on different gasses deducing that sunlight had the highest effect on carbonic acid, which led to her conclusion that “an atmosphere of that gas would give to our earth a high temperature.” Her findings were presented at an annual meeting for the American Association for the Advancement of Science in 1856 by the Smithsonian Institution’s secretary, Joseph Henry, not by Foote.

Her discoveries went unrecognized for decades: Although Foote’s presentation was in 1856, the discovery of the greenhouse effect was accredited to physicist John Tyndall, who carried out his experiments in 1859 — just two years after Foote. It was only in 2011, when Raymond Sorenson, an amateur historian, uncovered a report of Foote’s presentation at the 1856 American Association meeting — the first article by a woman physicist — that her contributions were publicly known.

Navigating the nice-authoritative balance at work is complicated to achieve, the Wall Street Journal reports. While many people are instinctively sweet, too much of a good thing can be detrimental to one’s career, a speaking coach says. While wanting to be liked is a natural tendency, being too agreeable can affect results and be perceived as lacking leadership skills and the necessary personality traits — like confidence — to steer employees forward and reach objectives.

Women at work: Damned if you do, damned if you don’t. This issue is particularly pronounced for working women who face more stringent social expectations at the workplace: If they’re too sweet, they’re not taken seriously. And if they establish their authority, they’re accused of being forceful and hostile, the article says.

But it’s not a hopeless case: You can be serious and firm without being a bully. In short, you can be your usual pleasant self without going over the top in either direction. The key is to set your boundaries, be assertive — without being cruel, a negotiations coach argues.