February 1, 2003 |
Mammalian sperm cells use heat to find their way to an egg, much as heat-sensing missiles seek out their targets. Eggs use chemical signals to lure sperm, but this alone cannot account for the speed of fertilization. Now scientists at the Weizmann Institute of Science in Israel report in the journal Nature Medicine that sperm move toward heat.
August 7, 1989 |
An estranged couple's fight over the fate of seven fertilized human eggs goes to court today. Junior Lewis Davis seeks to prevent his wife, Mary Sue Davis, from attempting to become pregnant with any of the eggs now that they are getting divorced. Davis says he no longer wants to have a child with her. The eggs were taken from Mrs. Davis and fertilized with Davis' sperm in an in-vitro fertilization program the couple entered six years ago in hopes of having a so-called "test-tube baby."
June 1, 2004 |
GRAY whales are having a baby boom, with nearly 180 cow-calf pairs migrating from Baja California, according to a recent census taken from Palos Verdes Peninsula. That's twice as many as in the previous season, which was also productive. Federal wildlife officials made similar observations near Monterey. Not all the whales can be seen, but the counts are considered an indicative sample. Scientists say abundant food in the Bering Sea is helping the whales rebound.
January 3, 1993 |
When they converged in San Francisco about 45 years ago, Wolfgang Paalen, Gordon Onslow Ford and Lee Mullican wanted nothing less than to be image makers of cosmic freedom. The purpose of art, they thought, was self-transcending awareness.
March 3, 1993 |
Every fisherman dreams of catching a trophy fish, one he can put on a wall to support his tales of angling prowess. That's a fundamental truth of fishing. Another fundamental truth: Fishermen lie. "We get that all the time," says Robert Munoz, who owns Robert's Fish Mounts in Baldwin Park, providing fishermen fiberglass replicas of their alleged catches. "With this catch-and-release thing, more and more people are releasing--but we don't know if they're catching," Munoz says.
CALIFORNIA | LOCAL
July 19, 1985 |
Everybody's got it, almost everybody experiences it, but there's not much agreement in San Diego County on how to teach it to our children. Sex. How do public schools teach a subject that is steeped in personal, parental and religious values, but which most people believe, according to public opinion polls, should be taught in the classroom? When it comes to math, there's little discrepancy among school districts about what skills to teach at what levels.