change order and add alt image text

overrides/home/carousel/items.js

@@ -6,13 +6,6 @@ export default [
     image: new URL('../../media/Methane_Carousel_card.png', import.meta.url).href,
     imageAlt: 'Earth shown with purple gas indicating atmospheric methane.'
   },
-  {
-    link: 'https://earth.gov/ghgcenter/stories/nist-methane-intercomparisons',
-    title: 'NIST Developing Standards for Methane Plume Data',
-    description: 'Description: Read about NIST efforts to develop consensus standards for growing volume of public and private methane plume satellite data.',
-    image: new URL('../../media/NIST_Methane_Intercomparisons_card.png', import.meta.url).href,
-    imageAlt: 'NIST Developing Standards for Methane Plume Data'
-  },
   {
 
     link: 'https://appliedsciences.nasa.gov/get-involved/training/english/arset-methane-observations-large-emission-event-detection-and',
@@ -21,4 +14,11 @@ export default [
     image: new URL('../../media/Methane_Website_Header.png', import.meta.url).href,
     imageAlt: 'Register: Stakeholder Engagement Forum.'
   },
+  {
+    link: 'https://earth.gov/ghgcenter/stories/nist-methane-intercomparisons',
+    title: 'NIST Developing Standards for Methane Plume Data',
+    description: 'Description: Read about NIST efforts to develop consensus standards for growing volume of public and private methane plume satellite data.',
+    image: new URL('../../media/NIST_Methane_Intercomparisons_card.png', import.meta.url).href,
+    imageAlt: 'Construction worker overlooking an industrial refinery at dusk, with interconnected glowing lines and nodes overlaid in the sky.'
+  },
 ]