Ten climate change Frequently Asked Questions, answered by
EARTH: The Operators’ Manual program host, Richard Alley.
Many of the scientific terms used here are defined in the Glossary.

Global Warming & Ice Sheets 

RiCHARD ALLEY  Evan Pugh Professor of Geosciences, The Pennsylvania State University 

The United States National Academy of Sciences, the United Nations Intergovernmental Panel on Climate Change (the IPCC), and numerous leading professional societies such as the American Geophysical Union and the American Association for the Advancement of Science Board of Directors have confirmed the strong scientific evidence that:

 → human activities (especially the burning of fossil fuels) are changing the
     composition of the atmosphere;

→ this is contributing to warming and other climate changes;

→ the changes so far are small compared to those expected under business as usual;

impacts of the climate changes on economies and ecosystems will be significant; and 

options exist to avoid or slow down the changes (mitigation), and to reduce the harm  
    and take advantage of the opportunities from the changes that occur (adaptation).   

Here, in question-and-answer format, is a synopsis of some of the relevant science, with special attention to ice sheets.
CLICK FOR FAQ1

*Any opinions, findings, conclusions, or recommendations expressed in this document are those of the author and do not necessarily reflect those of the Pennsylvania State University, the Intergovernmental Panel on Climate Change, the National Research Council, or other organizations.

UPDATE OF THE WEEK

2016 SkS Weekly News Roundup #6
A chronological listing of the news articles posted on the Skeptical Science Facebook page during the past week. Sun Jan 31 Australia's First Powerwall Home Batteries Are Already Installed In Weste... READ MORE
Industrial-era ocean heat uptake has doubled since 1997
The oceans are by far the largest heat reservoir in the Earth's climate system, so much so that they make up a whopping 93% of global warming. Thus global warming is really the story of ocean warming.... READ MORE
Measuring ocean heating is key to tracking global warming
Human emissions of greenhouse gases such as carbon dioxide are causing the Earth to warm. We know this, and we have known about the heat-trapping nature of these gases for over 100 years. But sci... READ MORE
'The Blob' Disrupts What We Think We Know About Climate Change, Oceans Scientist Says
This is a re-post from DeSmog Canada Deep in the northeast Pacific Ocean, The Blob is acting strangely. When the abnormally warm patch of water first appeared in 2013, fascinated scientists ... READ MORE
2016 SkS Weekly Digest #5
SkS Highlights... El Niño Impacts... Toon of the Week... Quote of the Week... They Said What?... SkS in the News... SkS Spotlights... Coming Soon on SkS... Poster of the Week... SkS Week in Re... READ MORE
2016 SkS Weekly News Roundup #5
A chronological listing of the news articles posted on the Skeptical Science Facebook page during the past week. Sun Jan 24 Climate Holism vs. Climate Reductionism by Richard Heinberg, Post Ca... READ MORE
'If the world ends in 2100, we’re probably OK'
There’s a myopia in the climate discourse today. “Everyone is focused on what happens by 2100. But that’s only 2 generations from today. It’s like: If the world ends in 2100 we... READ MORE
Climate scientists' open letter to the Wall Street Journal on its snow job
This is a guest post from Emmanuel Vincent and Daniel Nethery for Climate Feedback (@ClimateFdbk) An opinion piece by Patrick Michaels in the Wall Street Journal (“The Climate Snow Job,&rdq... READ MORE
Study finds slim odds of record heat, but not as slim as reported
No, this isn’t another article about how damn hot 2015 was. Although just between us, I may have lost a bet to climate seer Joe Romm because he correctly predicted 2015 ... READ MORE
Tracking the 2°C Limit - December 2015
Holy frijole! Okay, I'm not surprised that December beat November as the warmest anomaly in the entire GISS temperature record, but I was taken a little aback by how much.  For a full size image... READ MORE
Record hot 2015 gave us a glimpse at the future of global warming
2015 smashed the record for hottest year by about 0.14°C. To put that into perspective, the previous two hottest years (2014 and 2010) only broke the prior records by 0.002°C, according t... READ MORE
2016 SkS Weekly Digest #4
SkS Highlights... El Niño Impacts... Toon of the Week... Quote of the Week... He Said What?... SkS in the News... SkS Spotlights... Coming Soon on SkS... Poster of the Week... SkS Week in Revi... READ MORE
2016 SkS Weekly News Roundup #4
A chronological listing of the news articles posted on the Skeptical Science Facebook page during the past week. Sun Jan 17 Danger ahead: migration, climate top risks for Davos leaders by Ben ... READ MORE
Thorough, not thoroughly fabricated: The truth about global temperature data
This is a re-post by Scott K. Johnson from Ars Technica “In June, NOAA employees altered temperature data to get politically correct results.” At least, that's what Congressman Lama... READ MORE
The Little Ape That Could
The little Ape that Could (with apologies to Arnold Munk)   A couple of years ago, on a panel TV show about climate change on the BBC, an audience member commented that they thought the idea that... READ MORE
A striking resemblance between testimony for Peabody Coal and for Ted Cruz
In a recent congressional hearing, Ted Cruz (one of the leading candidates for the Republican presidential nomination) first asked us to follow the science, and then misused and abused the very scienc... READ MORE
A Rough Guide to Rainfall, Run-off and Rivers
Introduction: a moment of realisation. July 2001, North Wales, UK Pulling onto the side of the forestry road the air was thick with a single smell – that of mangled conifer wood. I locked the La... READ MORE
A Response to the “Data or Dogma?” hearing
Guest post (also available in PDF form) by:Benjamin D. Santer, Program for Climate Model Diagnosis and Intercomparison, Lawrence Livermore National Laboratory, Livermore, CA.Carl Mears, Remote Sensing... READ MORE
2016 SkS Weekly Digest #3
SkS Highlights... El Niño Impacts... Toon of the Week... Quote of the Week... Rebuttal Article Update... They Said What?... SkS Spotlights... Coming Soon on SkS... Poster of the Week... SkS We... READ MORE
2016 SkS Weekly News Roundup #3
A chronological listing of the news articles posted on the Skeptical Science Facebook page during the past week. Sun Jan 10 Western Australia Wildfire Brings Widespread Destruction by Brian Ka... READ MORE