En los años setenta, y en EEUU, unas doscientas mil toneladas de plomo al año se añadían a la gasolina . Actualmente, la gasolina con plomo para coches está prohibida. Descubre los peligros del tetraetilo de plomo en la...

Dr. Forrester discusses the importance of Martin Luther King, Jr.’s contributions to the Civil Rights Movement in America.

This video explores the life of Coretta Scott King, the wife of Martin Luther King Jr., and her own influential role as a civil and human rights activist. From her humble beginnings in Alabama to her international advocacy for peace and...

This video provides an overview of the life and legacy of Dr. Martin Luther King Jr. It highlights his early life, his involvement in the Civil Rights Movement, his famous speeches and protests, and the impact he had on the United...

Elise Loehnen, who works with Gwyneth Paltrow on her lifestyle brand, says, "If you want to get something done, you give it to a busy mom."

Mercury Program astronauts, wearing civilian clothes, sit in Mercury capsules / Virgil 'Gus' Grissom, Scott Carpenter, Walter Schirra, Jr., John Glenn, Jr, L Gordon Cooper, Jr, Donald 'Deke' Slayton, and Alan Shepard on January 01, 1961...

Big Time Rush James Maslow with Kendall Schmidt and Carlos Pena Jr at Kids Choice Awards at Celebrity Sightings in Los Angeles Big Time Rush James Maslow with Kendall Schmidt an on March 23, 2013 in Los Angeles, California (Footage by...

James Maslow, Carlos Pena Jr at TeenNick HALO Awards on11/17/12 in Los Angeles, CA (Footage by WireImage Video/Getty Images Entertainment Video)

Ed Begley Jr at the 'Trial and Error' Premiere at Academy Theater in Beverly Hills, California on May 21, 1997. (Footage by WireImage Video/Getty Images)

Antonio Sabato Jr at the 'War of the Worlds' Screening at Grauman's Chinese Theatre in Hollywood, California on June 27, 2005. (Footage by WireImage Video/Getty Images)

Ed Begley Jr at the 'Trial and Error' Premiere at Academy Theater in Beverly Hills, California on May 21, 1997. (Footage by WireImage Video/Getty Images)

Kareem Abdul-Jabbar Jr at the 'A Midsummer Night's Dream' Annual Celebrity All-Star Charity Weekend Presented by LA Stars at House of Blues in West Hollywood, California on July 8, 2006. (Footage by WireImage Video/Getty Images)

EVENT CAPSULE CLEAN: 81st Academy Awards Arrivals, Los Angeles, CA, 2/22/09 (Footage by WireImage Video/GettyImages)

Rachelle Carson Begley, Ed Begley Jr at the 83rd Annual Academy Awards - Arrivals Part 3 at Hollywood CA. (Footage by WireImage Video/GettyImages)

Rachelle Carson-Begley, Ed Begley Jr at AARP Magazine's 11th Annual Movies For Grownups Awards Gala on 2/6/12 in Beverly Hills, CA. (Footage by WireImage Video/Getty Images Entertainment Video)

Front line of march includes Roy Wilkins, Asa Philip Randolph, Martin Luther King, Jr, and Walter Reuther, head of auto workers.

Antonio Sabato Jr at the 'Pokemon, The First Movie' Premiere at Grauman's Chinese Theatre in Hollywood, California on November 6, 1999. (Footage by WireImage Video/Getty Images)

Carlos Pena Jr and Alexa Vega at 'Machete Kills' Los Angeles Premiere Carlos Pena Jr and Alexa Vega at 'Machete Kills' at Regal Cinemas L.A. Live on October 02, 2013 in Los Angeles, California (Footage by WireImage Video/Getty Images)

Alexa Vega and Carlos Pena Jr at 'Machete Kills' Los Angeles Premiere Alexa Vega and Carlos Pena Jr at 'Machete Kills' at Regal Cinemas L.A. Live on October 02, 2013 in Los Angeles, California (Footage by WireImage Video/Getty Images)

A huge crowd of people wait under a sign that reads: 'HAFA Adai LBJ WELCOME TO GUAM' / President Lyndon B Johnson and his wife Lady Bird walk down plane steps / shakes hands with government dignitaries / shakes hands with retiring...

INTERVIEW: James Pickens, Jr on the event, 'Grey's Anatomy,' and the importance of family-friendly content at the Ninth Annual Family Television Awards Sponsored by the Family Friendly Programming Forum at the Beverly Hilton in Beverly...

Hollywood Commandos hosted by Ron Reagan Jr at the Hollywood Commandos hosted by Ron Reagan Jr at Academy Plaza Theater in North Hollywood, California on May 13, 1997. (Footage by WireImage Video/Getty Images)

Larry Mullin Jr at the 'Mission Impossible' Premiere on May 20, 1996. (Footage by WireImage Video/Getty Images)

Ron Reagan Jr at the Hollywood Commandos hosted by Ron Reagan Jr at Academy Plaza Theater in North Hollywood, California on May 13, 1997. (Footage by WireImage Video/Getty Images)