The American Red Cross will host a blood drive from 9 a.m. to 7 p.m. today in HUB Alumni Hall.

Penn State's George Andrews will speak at 1 p.m. today in 114 McAllister Building. The Department of Mathematics and Baylor University will host the speech, titled "Cherry Award Lecture: Teaching as an Art." Andrews is a finalist for the Cherry Award, a national award that recognizes excellence in teaching. Refreshments will be served at 12:30 p.m.

The ex-director of Friends of Allegheny Wilderness will speak at 7 p.m. today in 18 Henderson Building. Eco-Action is hosting the event.

Students from the Schreyer Honors College's Leadership Jumpstart Class will show Paradise Now from 7 to 9 p.m. today in 117 Osmond Building as a part of the Highlighting Humanity event.

The Institute for Gravitation and the Cosmos will host a seminar at 10 a.m. today in 320 Whitmore Laboratory. Garrett Lisi of Foundational Questions in Physics & Cosmology (FQxi) will give the speech, "A Connection with Everything."

Penn State's Erin Boland will speak at 10 a.m. today in 301 Steidle Building. The Department of Materials Science and Engineering will host the event.

Alan Robock of Rutgers University will speak at 10 a.m. today in 541 Deike Building. The Earth System Science Center will host the event, titled "The Impact of Nuclear War on Climate."

The Department of Mathematics will host a speech at 2:30 p.m. today in 315 McAllister Building. Ben Davis of Saint Mary's College of California will speak.

Peter Cholak of the University of Notre Dame will speak at 2:30 p.m. today in 106 McAllister Building. The Department of Mathematics will host the event.

The Department of Mathematics will host a seminar at 3:30 p.m. today in 216 McAllister Building. Penn State's Bryce Weaver will speak about "Growth Rate of Periodic Orbits for Geodesic Flows on Surfaces with Regions of Positive Curvature."