Guide to the Week Ahead by LATimes.Com / Events on the Internet

Today

* 9 a.m. Martin Anderson, a senior fellow at Stanford University’s Hoover Institution, discusses the effect of the market’s volatility on the presidential campaign. https://discuss.washingtonpost.com/wp-srv/zforum/00/poltalkb_042000.htm

Friday

* 9 a.m.: In honor of the 30th anniversary of Earth Day, talk with Denis Hayes, chairman of the celebration and author of “The Official Earth Day Guide to Planet Repair.” https://cnn.com/chat

Saturday

* 10 p.m.: The Three Tenors--Jose Carreras, Placido Domingo and Luciano Pavarotti--make beautiful music together in a live Webcast from Mandalay Bay’s Event Center in Las Vegas.

https://www.superstartheater.com/webcast.html

Monday

* 8 a.m.: Join a discussion with Patrice Karst, author of “The Single Mother’s Survival Guide,” about meeting the challenges of parenting alone.

https://my.webmd.com/splash/article/1709.51225

Tuesday

* 6 p.m.: Chat with several nominees for the Nebula awards, which are the ultimate sci-fi tribute to science-fiction and fantasy writers from their peers.

https://scifi.com/chat

Wednesday

* 4 p.m.: Learn ways for “Healing Grief” from the new book’s author, James Van Praagh, who discusses losses ranging from a loved one to a job to health.

https://www.bn.com/community/calendar/authorbio/jpraagh_z4.asp?

userid=3L7QWDWR5R&srefer;=

To suggest an Internet event, e-mail click.here

@latimes.com.