Two people fly through the air on zip lines as the sun sets on the Rock in Rio Festival, in Rio de Janeiro, Brazil on Oct. 1.

Photo: Alexandro Auler/ZUMA Press

Zipping into the sunset

Two people fly through the air on zip lines on Oct. 1 as the sun sets on the Rock in Rio Festival, in Rio de Janeiro, Brazil.

 

President Barack Obama congratulates Google Science Fair winners on their accomplishments as young scientists in the Oval Office on Oct. 3.

Photo: Pete Souza/U.S. White House

Outstanding Google-acclaimed young scientists

President Barack Obama congratulates Google Science Fair winners on their accomplishments as young scientists in the Oval Office on Oct. 3. The winners of the competition are Naomi Shah (from left), Shree Bose and Lauren Hodge.

 

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Leina Sato, 25, free dives with two dolphins off the coast of Hawaii.

Photo: ZUMA Press

Dolphin whisperer

Leina Sato, 25, free dives with two dolphins off the coast of Hawaii. Sato, who came to Hawaii seven years ago to study marine biology, opened her own charter boat company, allowing her to dive with the dolphins every day.

 

Related on MNN: Dolphins 'talk' like humans, scientists say

 

Chinese exchange students from De Anza College near Cupertino, Calif. use candles to create the Apple logo at a makeshift memorial for Steve Jobs at the Apple headquarters on Oct. 5 in Cupertino, California.

Photo: Kevork Djansezian/Getty Images

Apple fans mourn the death of Steve Jobs

Chinese exchange students from De Anza College in California use candles to create the Apple logo at a makeshift memorial for Steve Jobs on Oct. 5 at Apple headquarters in Cupertino. Jobs, 56, died after a long battle with pancreatic cancer, prompting improvised memorials and tributes at Apple stores and offices around the world.

 

Related on MNN: Death of Steve Jobs may narrow the gap between Apple and its rivals

 

A protester walks through an activist tent city in Boston's Dewey Square on Oct. 2 as part of the Occupy Boston demonstration.

Photo: ZUMA Press

Occupy Boston protesters camp out in Dewey Square

A protester walks through a tent city for activists in Boston's Dewey Square on Oct. 2, part of the Occupy Boston demonstration. Inspired by the Occupy Wall Street protest in New York City, hundreds of "occupations" are sprouting up across the country in public squares and parks to express outrage at the current political and economic situation of the U.S.

 

Related on MNN: To occupy Wall Street, occupy the Internet

 

A dog named Tracy licks and nuzzles a young calf named Edelweiss on a farm in Troutville, Va. on Oct. 3.

Photo: Seeeeu/Flickr

Canine affection

A dog named Tracy licks and nuzzles a young calf named Edelweiss on a farm in Troutville, Va., on Oct. 3.

 

An art installation called

Photo: ZUMA Press

'Three Friends and One Hundred Birds'

An art installation called "Three Friends and One Hundred Birds" can be seen Oct. 2 on the grounds of this year's Guandu International Outdoor Sculpture Festival in Taipei's Guandu Nature Park. The exhibition, which coincides with the 10th anniversary of the founding of the nature park, will be on display until Feb. 29, 2012.

 

Related on MNN: 14 artists with a green message

 

Two horses walk through a pasture as trees in the distance change from green to yellow and orange in Baldwin, Colo. on Oct. 2.

Photo: Pam's Pics/Flickr

Autumn rolls into Colorado

Two horses trot through a pasture on Oct. 2 as trees in the distance change from green to yellow and orange in Baldwin, Colo.

 

Related on MNN: MNN's guide to fall foliage

 

A giant Sequoia tree is grounded on top of a pathway that leads sightseers through the Trail of 100 Giants in Sequoia National Forest

Photo: Sequoia National Forest

Giant trees fall to the forest floor

A giant Sequoia blocks a pathway that leads sightseers through the Trail of 100 Giants in Sequoia National Forest, 15 miles northeast of Hot Springs, Calif. Two of these enormous trees fell last weekend, temporarily closing down a trail that usually sees about 5,000 visitors every week.

 

Related on MNN: 7 of the world's most amazing trees

 

Villagers paddle along a flooded street in wooden canoes and makeshift rafts in Phnom Penh, Cambodia on Oct. 3.

Photo: ZUMA Press

Five feet high and rising

Villagers paddle along a flooded street in wooden canoes and makeshift rafts on Oct. 3 in Phnom Penh, Cambodia. Since August, at least 150 people have been killed by devestating flooding.

 

A baby zebra walks next to his mother at the El Salvador National Zoo, in San Salvador on Oct. 3.

Photo: ZUMA Press

Zoo-born zebra

A baby zebra walks next to his mother on Oct. 3 at the El Salvador National Zoo in San Salvador. This is the country's first zoo-born zebra.

 

After a long dry summer in Dresden, Germany, a section of the Elbe River under a massive bridge bears traces of drought on Oct. 4.

Photo: Matthias Hiekel/ZUMA Press

A parched Elbe River

After a long dry summer in Dresden, Germany, a section of the Elbe River bears traces of drought on Oct. 4.

 

Related on MNN: Grim predictions say 9 more years of Texas drought possible

 

Filipino-Chinese zoo owner Manny Tiangco feeds fruits to an orangutan named Pacquiao and a bear named Justin Bebear inside the Malabon Zoo in Malabon City, Philippines on Oct. 4.

Photo: ZUMA Press

World Animal Day

Filipino-Chinese zoo owner Manny Tiangco feeds fruits on Oct. 4 to an orangutan named Pacquiao and a bear named Justin Bebear inside the Malabon Zoo in Malabon City, Philippines. The zoo is celebrating World Animal Day, a holiday that has its origins in Florence, Italy. The holiday coincides with the feast day for Francis of Assisi, the patron saint of animals and the environment.

 

Fire fighters try to put out a fire in a field of tall grasses in eastern Pakistan's Lahore on Oct. 5.

Photo: ZUMA Press

Train engine fire

Firefighters try to extinguish a fire on Oct. 5 in a field of tall grass in eastern Pakistan's Lahore. The firefighters were called after a train engine caught on fire. The fire remains under investigation.