Molecular data suggest that the crown group of mammals originated after the end-Cretaceous mass extinction.

The Monster group fascinates mathematicians because it is the largest sporadic simple group, of order 2^46 · 3^20 · 5^9 · 7^6 · 11^2 · 13^3 · 17 · 19 · 23 · 29 · 31 · 41 · 47 · 59 · 71 (approximately 8·10^53), and is denoted M or F₁.

Volunteers coordinated their schedules to plan effective group actions over the summer.

During the retreat, our T-group met daily to practice honest feedback and improve trust.

In many textbooks, free groups are presented as the simplest examples of groups with no defining relations.

The form designer arranged the group boxes to make related settings easier to find.

Several advocacy groups have launched a campaign to improve air quality in the city.

Local libraries have launched outreach programs to better serve minority groups in the community.

Our study group meets every Thursday evening to review lecture notes and prepare for exams.

A minority group in the city organized a community center to preserve their language and traditions.