Wednesday, April 1
4:00 pm - 5:00 pm	▶︎ CANCELED: Astronomy Colloquium Cahill, Hameetman Auditorium TBD Kathryn Zurek, Professor of Theoretical Physics, California Institute of Technology,
8:00 pm - 9:30 pm	▶︎ CANCELED: Watson Lecture - The Rise of Oxygen in the Atmosphere: A View From the Deep Earth Beckman Auditorium Claire E. Bucholz, Assistant Professor of Geology, Caltech,

Thursday, April 2
4:00 pm - 5:00 pm	▶︎ CANCELED: Physics Colloquium East Bridge 201 (Richard P. Feynman Lecture Hall) From single to statistical: gravitational-wave populations Daniel Holz, University of Chicago,

Friday, April 3
11:00 am - 12:00 pm	High Energy Theory Seminar Online Event Reparametrization Modes in CFTs & Applications Felix Haehl, Institute for Advanced Study,
2:00 pm - 3:00 pm	● POSTPONED: TAPIR Seminar Cahill 370 Title to be announced Alexander Grant, Graduate Research Assistant, Department of Physics and Astronomy, Cornell University,

Monday, April 6
4:00 pm - 5:00 pm	High Energy Physics Seminar Online Event Teaching an Old LHC new Higgs Philip Harris, Massachusetts Institute of Technology,

Wednesday, April 8
4:00 pm - 5:00 pm	▶︎ CANCELED: Astronomy Colloquium Cahill, Hameetman Auditorium TBD Heino Falcke, Professor of Astroparticle Physics and Radio Astronomy, Department of Astronomy, Radboud University,

Thursday, April 9
12:00 pm - 1:00 pm	IQIM Postdoctoral and Graduate Student Seminar Online Event Teleportation by size, traversable wormholes, and quantum gravity in the lab Sepehr Ghazi Nezami, Sherman Fairchild Postdoctoral Scholar in Theoretical Physics, Preskill group,
4:00 pm - 5:00 pm	▶︎ CANCELED: Physics Colloquium East Bridge 201 (Richard P. Feynman Lecture Hall) TBA John Preskill, Caltech,

Friday, April 10
11:00 am - 12:00 pm	High Energy Theory Seminar Online Event The Statistical Mechanics of Near-Extremal Black Holes Luca Ilesiu, Princeton University,
7:00 pm - 9:00 pm	Stargazing Lecture Online Event The Circumgalactic Medium: The Gas Around Galaxies Yuguang Chen, PhD Candidiate, Department of Astronomy, Caltech,

Monday, April 13
4:00 pm - 5:00 pm	▶︎ CANCELED: High Energy Physics Seminar Lauritsen 469 Learning Cosmology from the First Starts Julian Muñoz, Harvard University,

Tuesday, April 14
4:00 pm - 5:00 pm	▶︎ CANCELED: Gravitational-Wave Research Seminar Cahill, Hameetman Auditorium The A+ upgrade to the LIGO Interferometers: Progress in two acts GariLynn Billingsley, A+ Deputy Project Leader, LIGO Laboratory, Caltech,

Wednesday, April 15
4:00 pm - 5:00 pm	▶︎ CANCELED: Astronomy Colloquium Cahill, Hameetman Auditorium TBD Amina Helmi, Professor of Dynamics, Structure and Evolution of the Milky Way, Kapteyn Astronomical Institute, University of Groningen,

Friday, April 17
11:00 am - 12:00 pm	IQIM Postdoctoral and Graduate Student Seminar Online Event Predicting Many Properties of a Quantum System from Very Few Measurements Hsin-Yuan (Robert) Huang, Graduate student, Vidick/Preskill group,
11:00 am - 12:00 pm	High Energy Theory Seminar Online Event Towards the geometric picture for gravity amplitudes Jaroslav Trnka, UC Davis,
2:00 pm - 3:30 pm	Caltech/UCLA Logic Seminar Online Event Descriptive combinatorics and distributed algorithms Anton Bernshteyn, Department of Mathematical Sciences, Carnegie Mellon University,

Monday, April 20
5:00 pm - 6:00 pm	▶︎ CANCELED: Exploration: The Globe and Beyond Baxter Lecture Hall This seminar has been canceled. Alan Stern, Planetary Scientist, Southwest Research Institute,

Tuesday, April 21
4:00 pm - 5:00 pm	▶︎ CANCELED: Chemical Physics Seminar Noyes 147 (J. Holmes Sturdivant Lecture Hall) Martin F. Jarrold, Professor and Robert & Marjorie Mann Chair, Department of Chemistry, Indiana University,

Wednesday, April 22
12:00 pm - 1:00 pm	Logic Seminar Online Event The Poisson Boundary of countable groups Josh Frisch, Department of Mathematics, Caltech,
4:00 pm - 5:00 pm	▶︎ CANCELED: Astronomy Colloquum Cahill, Hameetman Auditorium TBD Didier Queloz, Professor of Astrophysics, University of Cambridge,
8:00 pm - 9:30 pm	▶︎ CANCELED: Watson Lecture - A Geodesy Odyssey: Mapping Disasters From Space Beckman Auditorium Susan Owen, Principal Investigator and Project Scientist, Advanced Rapid Imaging and Analysis (ARIA) for Natural Hazards Project, JPL,

Friday, April 24
11:00 am - 12:00 pm	High Energy Theory Seminar Online Event Double-scaled and Supersymmetric SYK Vladimir Narovlansky, Princeton University,
11:00 am - 12:00 pm	IQIM Postdoctoral and Graduate Student Seminar Online Event Harvesting proximity effect in 2D Ferromagnetic Semiconductor Heterostructures for Spin and Valleytronics Ding Zhong, Postdoctoral Scholar, Applied Physics and Materials Science, Faraon Group,
2:00 pm - 3:30 pm	Caltech/UCLA Logic Seminar Online Event Borel asymptotic dimension and hyperfinite equivalence relations Brandon Seward, Department of Mathematics, UC San Diego,

Monday, April 27
10:00 am - 11:00 am	High Energy Physics Seminar Online Event New limit of the neutron electric dipole moment Philipp Schmidt-Wellenburg, Paul Scherrer Institute, Switzerland,

Wednesday, April 29
12:00 pm - 1:00 pm	Logic Seminar Online Event Tiling properties and pointwise ergodic theorems Jenna Zomback, Department of Mathematics, University of Illinois at Urbana-Champaign,
4:00 pm - 5:00 pm	▶︎ CANCELED: Astronomy Colloquium Cahill, Hameetman Auditorium TBD Andrea Ghez, Professor of Physics & Astronomy, Astronomy, UCLA,