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Jan16-12 Greg Bernhardt
algae, rescue Sticky Thread Pinned: Algae to the rescue ( 1 2 3 ... Last)
It may be valuable to consider microalgae as a potential solution to a number of problems; not the least of which...
Aug13-14 07:16 PM
Ivan Seeking
544 196,649
Before posting anything, please review the Physics Forums Global Guidelines. CC/GW threads in this forum are...
Jun9-14 09:26 AM
Greg Bernhardt
0 3,391
on road? and why not cuboidal ones?
T 01:02 PM
russ_watters
3 24
Which continent is the driest continent? I think it should be Antartica, but I have found it is Australia. I think so...
T 08:36 AM
mech-eng
4 100
Mt. Tavurvur, located near the town of Rabaul in the eastern region of Papua New Guinea, has erupted again. Some...
T 08:03 AM
Astronuc
0 91
During the history of Earth, there have been several ice ages. What caused the climate to cool so much to create...
Y 08:23 AM
Andre
4 479
http://geomaps.wr.usgs.gov/parks/deva/racetrack.pdf 6/20/09 New Paper Claims Explanation...
Aug30-14 09:22 AM
Astronuc
94 50,638
hi gang 3 x M6+ events within 24 hrs down the west coast regions of the Americas as recorded on my system here in...
Aug28-14 10:00 PM
davenn
13 1,369
Hi. Usually Nile river is assumed as world's longest river with its 4250 miles length but sometimes Mississippi River...
Aug27-14 01:19 PM
dextercioby
16 4,087
I am writing an intro physics problem about a flowing stream. I am going to assume that all of the gravitational...
Aug22-14 08:29 PM
olivermsun
1 830
Mix cream in coffee and it never unmixes. Even though the cup of coffee is not a closed system, the second law of...
Aug19-14 05:12 PM
256bits
1 963
Fantastic infographic! http://lightsinthedark.files.wordpress.com/2013/04/50-facts-about-earth3.jpg
Aug19-14 02:43 AM
Sheppie
20 6,791
Swarm Data: Earth's Magnetic Field is Weakening 10 times Faster than Recent Past. Why? ...
Aug16-14 10:26 AM
zyxwv99
3 3,321
Hello everyone! my question is why the ice of Antarctica and arctic, it is made of sweet/fresh water,even though it...
Aug9-14 08:11 AM
olivermsun
9 2,839
why gravity on earth is very strong on the north atlantic ocean? ok, obviously where there is thick crust like...
Aug8-14 06:46 PM
jim hardy
7 3,941
in the sources I read the they are in the central europe or sometimes south central. But on the other hand Germany is...
Aug7-14 01:18 AM
UTONIN
4 1,780
I've never really studied clouds or the movements of clouds or paid any attention to the science that I was taught in...
Aug4-14 08:52 AM
Dotini
19 4,433
The reason: I live in a small waterside town and we are very concerned over our water table. The problem is...
Jul30-14 03:48 PM
Travis_King
4 1,768
What features of our Earth amaze you the most? They can be natural wonders, science phenomenons, landforms, etc. Share...
Jul29-14 01:14 PM
nsaspook
14 2,471
A region of Venezuela has a high incidence of recurrent thunderstorm activity. It is apparently a unique set of...
Jul28-14 12:48 AM
davenn
2 1,954
http://www.sciencedaily.com/releases/2014/06/140620115751.htm...
Jul27-14 09:08 PM
Evo
11 4,420
Hi. Just a idea wondering around my brain today. I live near volcanoes, some have secondary activity (which is...
Jul20-14 10:24 PM
davenn
1 2,008
If given the decibels from the thunder and the distance away the lightning struck, would it be possible to tell the...
Jul20-14 06:22 PM
davenn
2 1,880
An unusual crater has been discovered on the Yamal peninsula in Siberia. ...
Jul19-14 07:34 PM
jim hardy
3 1,832
Just wondering if it's true when people say we will be out of oil in 50 years. If so are there plans to what's gonna...
Jul18-14 06:50 PM
mheslep
37 7,305
I was googling to see if a bomb could disrupt a tornado and I came across this thread here (...
Jul9-14 06:23 PM
Evo
23 11,249
Somehow I managed to miss an anniversary from my childhood: It was 45 years ago last Sunday that the Cuyahoga River...
Jul8-14 01:23 AM
Trucker Mark
2 4,181
In Science 4 July 2014, there is an item that I saw summarised online: Injection wells blamed in Oklahoma...
Jul6-14 04:29 AM
Borek
26 6,520
I've heard that the earths magnetic field protects us from radiation but am curious as to how this works. I assume...
Jul4-14 06:03 PM
davenn
4 3,215
My current understanding is that civilization is built on fossil fuels, and the resulting emissions cause climate...
Jun25-14 08:19 PM
D H
2 3,440
The IPCC uses a figure 1.2C for the direct response to a doubling of CO2, from 280 ppm to 560 ppm....
Jun24-14 05:55 PM
willem2
5 3,463
OK so we all know that seismic waves decrease in amplitude at about 1/r, the decay is slower than P and S-waves but...
Jun23-14 06:58 PM
davenn
8 2,775
Not sure if I should post this question here or in the Materials & Chemical Engineering forum but I will give it a...
Jun22-14 09:32 AM
jedishrfu
3 3,157
The question is whether it's theoretically possible to tap this source for human use? ...
Jun17-14 11:57 PM
OmCheeto
4 3,566
If one digs a well near the ocean can the sand filter the salt out of ocean water? If so how far inland would one have...
Jun17-14 03:06 PM
james marple
9 4,455
I have just had a trip up Mt. Etna (Sicily). A brilliant trip but it raised a question. There are large patches of...
Jun12-14 07:35 PM
256bits
9 3,213
I have an idea for you on defusing or dissipating tornados. I thought that a sufficiently large explosion at the...
Jun12-14 10:30 AM
johnbbahm
38 24,507
Of course night is colder than daytime in general but it seems to me that maybe half an hour before sunrise it seems...
Jun12-14 07:15 AM
johnbbahm
5 3,228
My teacher says in a couple of hundred years we are going to run out of fossil fuels. What then? I am pretty sure we...
Jun12-14 06:32 AM
johnbbahm
43 11,992
I've certainly hear and read tons of stuff that is not only less than top notch science, but also seems to answer the...
Jun12-14 02:25 AM
D H
1 3,043
Hi i have this question in my mind for very long time ,what stops water on earth from going further down and down and...
Jun11-14 07:39 AM
vrmuth
12 4,388
Yes, curious about that. (No, I'm NOT asking about some short term disturbances when glaciers were melting, but...
Jun11-14 03:17 AM
Czcibor
6 3,033

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