The rise of oxygen levels early in Earth's history paved the way for the spectacular diversity of animal life. But for decades, scientists have struggled to explain the factors that controlled this gradual and stepwise process, ...
Earth Sciences
Aug 2, 2021
3
3045
I'm going to ask you how long a day is on Earth, and you're going to get the haunting suspicion that this is a trap. Your instincts are right, it's a trap! The answer may surprise you.
Space Exploration
Nov 6, 2015
1
84
(AP) -- How much would you pay for an amazing, state-of-the-art light bulb? Shoppers will be asking themselves that very question at Home Depot and other outlets starting Sunday - Earth Day - when the bulb that won a $10 ...
Energy & Green Tech
Apr 16, 2012
33
0
It's tough accomplishing everything we want to get done in a day. But it would have been even more difficult had we lived earlier in Earth's history.
Planetary Sciences
Jun 12, 2023
0
1887
From the Neolithic to present times, the amount of sunlight we see in a day has had a profound impact on human culture. We are fast approaching the winter solstice for the Northern hemisphere, which takes place on December ...
Astronomy
Dec 21, 2018
0
8
A prize-winning, super energy saving LED bulb from Dutch electronics giant Philips, said to last over 20 years, went on sale online and in stores Sunday to coincide with Earth Day.
Energy & Green Tech
Apr 22, 2012
44
0
If we looked at Earth from outer space, it would appear that our blue-and-green planet has abundant water. But of all that blue, less than 3% is freshwater, and less than 1% of that is available for use. More than a billion ...
Ecology
Mar 16, 2022
1
33
San Francisco and Amsterdam set an online stage for an environmental rivalry regarding which city is more nature-friendly.
Environment
Dec 2, 2009
0
0
Today's world is all about portability when it comes to gadgets and there are plenty of "green" choices for the upcoming Earth Day on April 22.
Consumer & Gadgets
Apr 15, 2010
2
0
The 40-year anniversary of Earth Day is sparking a renewed commitment to protecting natural resources. Across the country people recognize there are successes to laud, but also new challenges to confront.
Environment
Apr 22, 2010
8
0
