There is a critical need for blood. Register for the American Red Cross Blood Drive on Friday, April 8 from 11 a.m. to 4 p.m. at CambridgeSide. Donors are asked to register in advance by visiting rcblood.org/3qee9Kc. The drive will take place on Level 1 across from Apple. Those who cannot donate blood, can still help by making a monetary donation at RedCross.org/donate/donation. For more information, visit CambridgeSide.com.