US Republicans vote to remove wolf protections

The Republican-majority US House of Representatives on Tuesday passed a bill that would remove endangered species protections for the gray wolf across much of the country, sparking outrage among conservationists.

Study uncovers the secret of long-lived stem cells

Nothing lives forever, but compared to other cells in the body, hematopoietic stem cells (HSCs) are remarkably long-lived. HSCs are blood-forming cells—they give rise to rapidly dividing progenitor cells, which in turn ...