Science News Roundup: For elephants, like people, greetings are a complicated affair; First human to receive transplanted pig kidney dies and more

A study based on observations of African savannah elephants in the Jafuta Reserve in Zimbabwe provides new insight into the visual, acoustic and tactile gestures they employ in greetings, including how greetings differ depending on factors such as their sex and whether they are looking at each other. First human to receive transplanted pig kidney dies A man with end-stage renal disease who earlier this year became the first human to receive a new kidney from a genetically modified pig has died, Massachusetts General Hospital in Boston said.

Following is a summary of current science news briefs.

For elephants, like people, greetings are a complicated affair

People greet each other in a variety of ways. They might say "hello," "guten tag," "hola," "konnichiwa" or "g'day." They might shake hands, bump fists, make a fist-and-palm gesture or press their hands together with a gentle head bow. They might kiss on the cheek or hand. And they might give a nice big hug. For elephants, greetings appear to be a similarly complex affair. A study based on observations of African savannah elephants in the Jafuta Reserve in Zimbabwe provides new insight into the visual, acoustic and tactile gestures they employ in greetings, including how greetings differ depending on factors such as their sex and whether they are looking at each other.

First human to receive transplanted pig kidney dies

A man with end-stage renal disease who earlier this year became the first human to receive a new kidney from a genetically modified pig has died, Massachusetts General Hospital in Boston said. "The Mass General transplant team is deeply saddened at the sudden passing of Mr. Rick Slayman," the hospital said in a statement on Saturday. "We have no indication that it was the result of his recent transplant."

Boeing Starliner's crew debut delayed again over spacecraft issue

Boeing's first Starliner mission carrying astronauts into space has been delayed again - until at least May 21 - over an issue with the spacecraft's propulsion system, the company said on Tuesday. Starliner's mission carrying two NASA astronauts had been scheduled for liftoff from Florida last week until a technical issue with its Atlas 5 rocket prompted a delay to Friday, May 17, the latest postponement for a program years behind schedule and more than $1.5 billion over budget.

New breast cancer genes found in women of African ancestry, may improve risk assessment

Twelve breast cancer genes identified in women of African ancestry in a large study published on Monday may one day help better predict their risk for the disease and highlights potential risk differences from women of European descent. Studies to identify genetic mutations linked with breast cancer have previously mainly focused on women of European ancestry.

Blue Origin to resume space tourist flights after near 2-year pause

Jeff Bezos-backed Blue Origin will resume flights to space on Sunday, ending a near two-year pause of crewed operations following a 2022 mission failure. The NS-25 mission will lift off from Launch Site One in West Texas, with the launch window for the flight starting at 0830 CT (1330 GMT), the company said on Tuesday.

(With inputs from agencies.)