Potentially toxic algae bloom starts early in Charles River 
Blue-green algae blooming on portions of the lower Charles River has the potential to release toxins harmful to people and dogs.
(JOHN TLUMACKI/GLOBE STAFF)

Potentially toxic algae bloom starts early in Charles River

Blue-green algae blooming on portions of the lower Charles River has the potential to release toxins harmful to people and dogs.

(JOHN TLUMACKI/GLOBE STAFF)

Mass. Eye and Ear wants to transform Storrow 
The hospital will unveil a bold proposal that would reshape a twisting section of Storrow Drive and turn what are now parking lots into three acres of new parkland.
(KAYANA SZYMCZAK FOR THE BOSTON GLOBE)

Mass. Eye and Ear wants to transform Storrow

The hospital will unveil a bold proposal that would reshape a twisting section of Storrow Drive and turn what are now parking lots into three acres of new parkland.

(KAYANA SZYMCZAK FOR THE BOSTON GLOBE)

Liberty Mutual renews Fourth of July role 
The Boston insurance giant said it will renew its sponsorship of the Boston Pops Fourth of July fireworks display and concert through 2015.
(YOON S. BYUN/GLOBE STAFF/FILE)

Liberty Mutual renews Fourth of July role

The Boston insurance giant said it will renew its sponsorship of the Boston Pops Fourth of July fireworks display and concert through 2015.

(YOON S. BYUN/GLOBE STAFF/FILE)

From depths of the Charles, an endangered species surfaces
- An Atlantic sturgeon, an ancient, endangered species of fish, was spotted in the Charles River, delighting aquatic specialists, who said sturgeon are fighting for their survival.

From depths of the Charles, an endangered species surfaces

- An Atlantic sturgeon, an ancient, endangered species of fish, was spotted in the Charles River, delighting aquatic specialists, who said sturgeon are fighting for their survival.

Friends’ blueprint expands Esplanade access, amenities
- The Esplanade Association’s plan envisions a pedestrian walkway jutting out into the Charles River, a terrace near the Hatch Shell, and a widened bridge over Storrow Drive.
(WATERCOLOR ILLUSTRATION BY FRANK COSTANTINO)

Friends’ blueprint expands Esplanade access, amenities

- The Esplanade Association’s plan envisions a pedestrian walkway jutting out into the Charles River, a terrace near the Hatch Shell, and a widened bridge over Storrow Drive.

(WATERCOLOR ILLUSTRATION BY FRANK COSTANTINO)

Longfellow Bridge loses outbound car lane in new design
- As part of a new design, the rebuilt Longfellow Bridge will shrink to a single lane bound for Cambridge and gain wider bike lanes and sidewalks.

Longfellow Bridge loses outbound car lane in new design

- As part of a new design, the rebuilt Longfellow Bridge will shrink to a single lane bound for Cambridge and gain wider bike lanes and sidewalks.

Bridge between Cambridge, Boston to be rebuilt for $20m 
- State officials approved a nearly $20 million contract yesterday to rebuild a Charles River bridge connecting Harvard Square and Harvard’s Allston campus, the latest project in the $3 billion Accelerated Bridge Program to repair or replace scores of long-neglected spans.

Bridge between Cambridge, Boston to be rebuilt for $20m

- State officials approved a nearly $20 million contract yesterday to rebuild a Charles River bridge connecting Harvard Square and Harvard’s Allston campus, the latest project in the $3 billion Accelerated Bridge Program to repair or replace scores of long-neglected spans.

Harvard claims long-awaited Regatta crown
- Harvard’s heavyweight crew may have collected enough shiny keepsakes over the past century and a half to fill Shreve’s from ceiling to floor. But the Crimson had won the Rivah’s biggest prize only twice.

Harvard claims long-awaited Regatta crown

- Harvard’s heavyweight crew may have collected enough shiny keepsakes over the past century and a half to fill Shreve’s from ceiling to floor. But the Crimson had won the Rivah’s biggest prize only twice.

A river that is clean and clear again
- IT WAS unthinkable 20 years ago that the Charles River would ever be clean enough to win the world’s leading environmental prize for river restoration.

A river that is clean and clear again

- IT WAS unthinkable 20 years ago that the Charles River would ever be clean enough to win the world’s leading environmental prize for river restoration.