A humanoid robot poses for photo at the Humanoids Summit 2026 in Tokyo, Thursday, May 28, 2026. (AP Photo/Ayaka McGill)

Professor Hiroshi Ishiguro, right, of Osaka University talks to android robot Geminoid at the Humanoids Summit 2026 in Tokyo, Thursday, May 28, 2026. (AP Photo/Ayaka McGill)

Workers load World Health Organization (WHO) emergency supplies onto a United Nations plane in Nairobi, Kenya, Wednesday, May 20, 2026, headed for Congo to combat the Ebola outbreak in Ituri province. (AP Photo/Andrew Kasuku)

This image provided by the Max Planck Institute of Animal Behavior shows a scientist releasing a homing pigeon in May, 2026, in Konstanz, Germany. (Christian Ziegler/Max Planck Institute of Animal Behavior via AP)

This image provided by the Max Planck Institute of Animal Behavior shows a pigeon wearing a tag used to track its movement in May, 2026, in Konstanz, Germany. (Christian Ziegler/Max Planck Institute of Animal Behavior via AP)

Yahya Mohammed, 14, of Hoffman Estates, Ill., competes during the first preliminary round of the Scripps National Spelling Bee, Tuesday, May 26, 2026, in Washington. (AP Photo/Allison Robbert)

Oliver Halkett, 14, Los Angeles, Calif., competes during the first preliminary round of the Scripps National Spelling Bee, Tuesday, May 26, 2026, in Washington. (AP Photo/Allison Robbert)

Keona-Dannette Osae-Twum, 13, of Waldwick, N.J.,, spells her word as she competes during the preliminary round of the Scripps National Spelling Bee at DAR Constitution Hall, Tuesday, May 26, 2026, in Washington. (AP Photo/Jose Luis Magana)