diff --git a/doc/11.experiment-challenge.md b/doc/11.experiment-challenge.md
index 71de583..9f2523d 100644
--- a/doc/11.experiment-challenge.md
+++ b/doc/11.experiment-challenge.md
@@ -21,13 +21,13 @@ cd ~/2020-NSURP/raw_data
 
 Download the files
 ```
-wget https://ibdmdb.org/tunnel/static/HMP2/WGS/1818/HSMA33S4.tar
-wget https://ibdmdb.org/tunnel/static/HMP2/WGS/1818/HSMA33R1.tar
-wget https://ibdmdb.org/tunnel/static/HMP2/WGS/1818/HSMA33R5.tar
+wget https://ibdmdb.org/downloads/raw/HMP2/MGX/2018-05-04/CSM7KOJO.tar
+wget https://ibdmdb.org/downloads/raw/HMP2/MGX/2018-05-04/HSMA33R1.tar
+wget https://ibdmdb.org/downloads/raw/HMP2/MGX/2018-05-04/HSMA33R5.tar
 
-wget https://ibdmdb.org/tunnel/static/HMP2/WGS/1818/MSM6J2QP.tar
-wget https://ibdmdb.org/tunnel/static/HMP2/WGS/1818/MSM6J2QF.tar
-wget https://ibdmdb.org/tunnel/static/HMP2/WGS/1818/MSM6J2QH.tar
+wget https://ibdmdb.org/downloads/raw/HMP2/MGX/2018-05-04/MSM6J2QP.tar
+wget https://ibdmdb.org/downloads/raw/HMP2/MGX/2018-05-04/MSM6J2QF.tar
+wget https://ibdmdb.org/downloads/raw/HMP2/MGX/2018-05-04/MSM6J2QH.tar
 ```
 
 Untar each read set
@@ -71,9 +71,9 @@ mkdir -p ~/2020-NSURP/metadata
 cd ~/2020-NSURP/metadata
 ```
 
-All information about this project can be found [here](https://ibdmdb.org/tunnel/public/summary.htmlhttps://ibdmdb.org/tunnel/public/summary.html).
+All information about this project can be found [here](https://ibdmdb.org/).
 
-Download the metadata file [here](https://ibdmdb.org/tunnel/products/HMP2/Metadata/hmp2_metadata.csv).
+Download the metadata file [here](https://ibdmdb.org/downloads/metadata/hmp2_metadata_2018-08-20.csv).
 
 This file contains information for the metagenomics sequencing (which we looked at), but also a number of other assessments.
 
@@ -81,24 +81,24 @@ This file is a spreadsheet that can be opened in Google docs or viewed with `les
 
 For example, view this file with less like so:
 ```
-less -S hmp2_metadata.csv
+less -S hmp2_metadata_2018-08-20.csv
 ```
 
 This is a very large file. You can get information about a specific sample by searching out the specific sample id's we used.
 For example:
 ```
-grep HSMA33S4 hmp2_metadata.csv
+grep HSMA33S4 hmp2_metadata_2018-08-20.csv
 ```
 
 That's still a lot of info - let's get only the info for metagenomics samples:
 ```
-grep metagenomics hmp2_metadata.csv | grep HSMA33S4
+grep metagenomics hmp2_metadata_2018-08-20.csv | grep HSMA33S4
 ```
 
 The formatting is still a litle ugly. 
 Let's direct the output to a file, and then open it with `less -S`:
 ```
-grep metagenomics hmp2_metadata.csv | grep HSMA33S4 > HSMA33S4.csv
+grep metagenomics hmp2_metadata_2018-08-20.csv | grep HSMA33S4 > HSMA33S4.csv
 less -S HSMA33S4.csv
 ```